Index: trunk/admin/config/missing_label_edit.php
===================================================================
diff -u -N -r860 -r2536
--- trunk/admin/config/missing_label_edit.php	(.../missing_label_edit.php)	(revision 860)
+++ trunk/admin/config/missing_label_edit.php	(.../missing_label_edit.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/reviews.php
===================================================================
diff -u -N -r1866 -r2536
--- trunk/admin/reviews.php	(.../reviews.php)	(revision 1866)
+++ trunk/admin/reviews.php	(.../reviews.php)	(revision 2536)
@@ -82,7 +82,7 @@
 				$p = "";
 			}
 		}
-		if(!strlen($pathtoroot))
+		if( !(isset($pathtoroot) && $pathtoroot) )
 		$pathtoroot = ".".$pathchar;
 	}
 	else
Index: trunk/admin/install.php
===================================================================
diff -u -N -r2194 -r2536
--- trunk/admin/install.php	(.../install.php)	(revision 2194)
+++ trunk/admin/install.php	(.../install.php)	(revision 2536)
@@ -7,7 +7,7 @@
 $general_error = '';
 
 $pathtoroot = "";
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   //$path=dirname(realpath(__FILE__));
@@ -51,7 +51,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/edit_customfields.php
===================================================================
diff -u -N -r927 -r2536
--- trunk/admin/config/edit_customfields.php	(.../edit_customfields.php)	(revision 927)
+++ trunk/admin/config/edit_customfields.php	(.../edit_customfields.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/save_redirect.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/save_redirect.php	(.../save_redirect.php)	(revision 1566)
+++ trunk/admin/save_redirect.php	(.../save_redirect.php)	(revision 2536)
@@ -58,7 +58,7 @@
 					$p = "";
 				}
 			}
-			if(!strlen($pathtoroot))
+			if( !(isset($pathtoroot) && $pathtoroot) )
 			$pathtoroot = ".".$pathchar;
 		}
 		else
Index: trunk/admin/relation_select.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/relation_select.php	(.../relation_select.php)	(revision 1566)
+++ trunk/admin/relation_select.php	(.../relation_select.php)	(revision 2536)
@@ -49,7 +49,7 @@
 $b_header_addon = "<DIV style='position:relative; z-Index: 1; background-color: #ffffff; padding-top:1px;'><div style='z-Index:1; position:relative'>";
 
 //$pathtoroot="";
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -92,7 +92,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/adduser.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/users/adduser.php	(.../adduser.php)	(revision 1566)
+++ trunk/admin/users/adduser.php	(.../adduser.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/edit_banlist.php
===================================================================
diff -u -N -r822 -r2536
--- trunk/admin/config/edit_banlist.php	(.../edit_banlist.php)	(revision 822)
+++ trunk/admin/config/edit_banlist.php	(.../edit_banlist.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/import/step1.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/import/step1.php	(.../step1.php)	(revision 374)
+++ trunk/admin/import/step1.php	(.../step1.php)	(revision 2536)
@@ -1,6 +1,6 @@
 <?php 
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -43,7 +43,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/logs/searchlog.php
===================================================================
diff -u -N -r836 -r2536
--- trunk/admin/logs/searchlog.php	(.../searchlog.php)	(revision 836)
+++ trunk/admin/logs/searchlog.php	(.../searchlog.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/import/step2.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/import/step2.php	(.../step2.php)	(revision 374)
+++ trunk/admin/import/step2.php	(.../step2.php)	(revision 2536)
@@ -1,6 +1,6 @@
 <?php 
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -43,7 +43,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/import/step3.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/import/step3.php	(.../step3.php)	(revision 374)
+++ trunk/admin/import/step3.php	(.../step3.php)	(revision 2536)
@@ -1,6 +1,6 @@
 <?php 
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -43,7 +43,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/import/step4.php
===================================================================
diff -u -N -r2251 -r2536
--- trunk/admin/import/step4.php	(.../step4.php)	(revision 2251)
+++ trunk/admin/import/step4.php	(.../step4.php)	(revision 2536)
@@ -1,6 +1,6 @@
 <?php 
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -43,7 +43,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/group_addpermission.php
===================================================================
diff -u -N -r822 -r2536
--- trunk/admin/users/group_addpermission.php	(.../group_addpermission.php)	(revision 822)
+++ trunk/admin/users/group_addpermission.php	(.../group_addpermission.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/user_select.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/users/user_select.php	(.../user_select.php)	(revision 1566)
+++ trunk/admin/users/user_select.php	(.../user_select.php)	(revision 2536)
@@ -15,7 +15,7 @@
 
 define('IS_POPUP', 1);
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -58,7 +58,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/logs/email_log.php
===================================================================
diff -u -N -r822 -r2536
--- trunk/admin/logs/email_log.php	(.../email_log.php)	(revision 822)
+++ trunk/admin/logs/email_log.php	(.../email_log.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##   result in revocation of the license and support	##
 ## privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/edit_template.php
===================================================================
diff -u -N -r386 -r2536
--- trunk/admin/config/edit_template.php	(.../edit_template.php)	(revision 386)
+++ trunk/admin/config/edit_template.php	(.../edit_template.php)	(revision 2536)
@@ -13,7 +13,7 @@
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -56,7 +56,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/edit_label.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/config/edit_label.php	(.../edit_label.php)	(revision 1566)
+++ trunk/admin/config/edit_label.php	(.../edit_label.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
 	$path=dirname(realpath(__FILE__));
 	if(strlen($path))
@@ -55,7 +55,7 @@
 				$p = "";
 			}
 		}
-		if(!strlen($pathtoroot))
+		if( !(isset($pathtoroot) && $pathtoroot) )
 		$pathtoroot = ".".$pathchar;
 	}
 	else
Index: trunk/admin/config/addlang.php
===================================================================
diff -u -N -r1344 -r2536
--- trunk/admin/config/addlang.php	(.../addlang.php)	(revision 1344)
+++ trunk/admin/config/addlang.php	(.../addlang.php)	(revision 2536)
@@ -14,7 +14,7 @@
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
 	$path=dirname(realpath(__FILE__));
 	if(strlen($path))
@@ -57,7 +57,7 @@
 				$p = "";
 			}
 		}
-		if(!strlen($pathtoroot))
+		if( !(isset($pathtoroot) && $pathtoroot) )
 		$pathtoroot = ".".$pathchar;
 	}
 	else
Index: trunk/admin/config/addtheme_templates.php
===================================================================
diff -u -N -r822 -r2536
--- trunk/admin/config/addtheme_templates.php	(.../addtheme_templates.php)	(revision 822)
+++ trunk/admin/config/addtheme_templates.php	(.../addtheme_templates.php)	(revision 2536)
@@ -13,7 +13,7 @@
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -56,7 +56,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/tree/tree.php
===================================================================
diff -u -N -r1510 -r2536
--- trunk/admin/tree/tree.php	(.../tree.php)	(revision 1510)
+++ trunk/admin/tree/tree.php	(.../tree.php)	(revision 2536)
@@ -1,5 +1,5 @@
 <?php
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -42,7 +42,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/help/install_help.php
===================================================================
diff -u -N -r1510 -r2536
--- trunk/admin/help/install_help.php	(.../install_help.php)	(revision 1510)
+++ trunk/admin/help/install_help.php	(.../install_help.php)	(revision 2536)
@@ -4,7 +4,7 @@
 
 
 $pathtoroot = "";
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   //$path=dirname(realpath(__FILE__));PATH_TRANSLATED
   $path=dirname(realpath(__FILE__));
@@ -48,7 +48,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/edit_config.php
===================================================================
diff -u -N -r927 -r2536
--- trunk/admin/config/edit_config.php	(.../edit_config.php)	(revision 927)
+++ trunk/admin/config/edit_config.php	(.../edit_config.php)	(revision 2536)
@@ -1,5 +1,5 @@
 <?php
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -42,7 +42,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/adduser_custom.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/users/adduser_custom.php	(.../adduser_custom.php)	(revision 1566)
+++ trunk/admin/users/adduser_custom.php	(.../adduser_custom.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/category/addrelation.php
===================================================================
diff -u -N -r898 -r2536
--- trunk/admin/category/addrelation.php	(.../addrelation.php)	(revision 898)
+++ trunk/admin/category/addrelation.php	(.../addrelation.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/tools/server_info.php
===================================================================
diff -u -N -r376 -r2536
--- trunk/admin/tools/server_info.php	(.../server_info.php)	(revision 376)
+++ trunk/admin/tools/server_info.php	(.../server_info.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/module_email.php
===================================================================
diff -u -N -r2287 -r2536
--- trunk/admin/config/module_email.php	(.../module_email.php)	(revision 2287)
+++ trunk/admin/config/module_email.php	(.../module_email.php)	(revision 2536)
@@ -13,7 +13,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -56,7 +56,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/category/addcategory.php
===================================================================
diff -u -N -r777 -r2536
--- trunk/admin/category/addcategory.php	(.../addcategory.php)	(revision 777)
+++ trunk/admin/category/addcategory.php	(.../addcategory.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/missing_label_search.php
===================================================================
diff -u -N -r860 -r2536
--- trunk/admin/config/missing_label_search.php	(.../missing_label_search.php)	(revision 860)
+++ trunk/admin/config/missing_label_search.php	(.../missing_label_search.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/config_theme.php
===================================================================
diff -u -N -r1066 -r2536
--- trunk/admin/config/config_theme.php	(.../config_theme.php)	(revision 1066)
+++ trunk/admin/config/config_theme.php	(.../config_theme.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/category/addcategory_customfields.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/category/addcategory_customfields.php	(.../addcategory_customfields.php)	(revision 374)
+++ trunk/admin/category/addcategory_customfields.php	(.../addcategory_customfields.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/adduser_images.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/users/adduser_images.php	(.../adduser_images.php)	(revision 1566)
+++ trunk/admin/users/adduser_images.php	(.../adduser_images.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/email/sendmail.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/email/sendmail.php	(.../sendmail.php)	(revision 374)
+++ trunk/admin/email/sendmail.php	(.../sendmail.php)	(revision 2536)
@@ -13,7 +13,7 @@
 ##  privileges along maximum prosecution allowed by law. ##
 ##############################################################
 //$pathtoroot="";
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -56,7 +56,7 @@
      $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/editor/FCKeditor/filemanager/upload/php/upload.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/editor/FCKeditor/filemanager/upload/php/upload.php	(.../upload.php)	(revision 374)
+++ trunk/admin/editor/FCKeditor/filemanager/upload/php/upload.php	(.../upload.php)	(revision 2536)
@@ -38,7 +38,7 @@
 
 // Init var :
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 
 {
 
@@ -124,7 +124,7 @@
 
     }
 
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
 
       $pathtoroot = ".".$pathchar;
 
Index: trunk/admin/config/importlang.php
===================================================================
diff -u -N -r695 -r2536
--- trunk/admin/config/importlang.php	(.../importlang.php)	(revision 695)
+++ trunk/admin/config/importlang.php	(.../importlang.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/modules/mod_status.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/modules/mod_status.php	(.../mod_status.php)	(revision 374)
+++ trunk/admin/modules/mod_status.php	(.../mod_status.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/category/addcategory_custom.php
===================================================================
diff -u -N -r777 -r2536
--- trunk/admin/category/addcategory_custom.php	(.../addcategory_custom.php)	(revision 777)
+++ trunk/admin/category/addcategory_custom.php	(.../addcategory_custom.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/logs/session_list.php
===================================================================
diff -u -N -r979 -r2536
--- trunk/admin/logs/session_list.php	(.../session_list.php)	(revision 979)
+++ trunk/admin/logs/session_list.php	(.../session_list.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##   result in revocation of the license and support	##
 ## privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/category/addpermission.php
===================================================================
diff -u -N -r898 -r2536
--- trunk/admin/category/addpermission.php	(.../addpermission.php)	(revision 898)
+++ trunk/admin/category/addpermission.php	(.../addpermission.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/category/addcategory_images.php
===================================================================
diff -u -N -r822 -r2536
--- trunk/admin/category/addcategory_images.php	(.../addcategory_images.php)	(revision 822)
+++ trunk/admin/category/addcategory_images.php	(.../addcategory_images.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/user_list.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/users/user_list.php	(.../user_list.php)	(revision 1566)
+++ trunk/admin/users/user_list.php	(.../user_list.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/backup/backup1.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/backup/backup1.php	(.../backup1.php)	(revision 374)
+++ trunk/admin/backup/backup1.php	(.../backup1.php)	(revision 2536)
@@ -1,5 +1,5 @@
 <?php  
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -42,7 +42,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/install/upgrade_errors.php
===================================================================
diff -u -N -r2067 -r2536
--- trunk/admin/install/upgrade_errors.php	(.../upgrade_errors.php)	(revision 2067)
+++ trunk/admin/install/upgrade_errors.php	(.../upgrade_errors.php)	(revision 2536)
@@ -1,7 +1,7 @@
 <?php 
 
 $pathtoroot = "";
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   //$path=dirname(realpath(__FILE__));PATH_TRANSLATED
   $path=dirname(realpath(__FILE__));
@@ -45,7 +45,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/backup/backup2.php
===================================================================
diff -u -N -r534 -r2536
--- trunk/admin/backup/backup2.php	(.../backup2.php)	(revision 534)
+++ trunk/admin/backup/backup2.php	(.../backup2.php)	(revision 2536)
@@ -1,7 +1,7 @@
 <?php
 //@set_time_limit(600);
 $backup_inport = 1;                                                               
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -44,7 +44,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/group_select.php
===================================================================
diff -u -N -r889 -r2536
--- trunk/admin/users/group_select.php	(.../group_select.php)	(revision 889)
+++ trunk/admin/users/group_select.php	(.../group_select.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/user_addpermission.php
===================================================================
diff -u -N -r822 -r2536
--- trunk/admin/users/user_addpermission.php	(.../user_addpermission.php)	(revision 822)
+++ trunk/admin/users/user_addpermission.php	(.../user_addpermission.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/backup/backup3.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/backup/backup3.php	(.../backup3.php)	(revision 374)
+++ trunk/admin/backup/backup3.php	(.../backup3.php)	(revision 2536)
@@ -1,5 +1,5 @@
 <?php
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -42,7 +42,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/relations/item_type.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/relations/item_type.php	(.../item_type.php)	(revision 374)
+++ trunk/admin/relations/item_type.php	(.../item_type.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/user_editgroup.php
===================================================================
diff -u -N -r2085 -r2536
--- trunk/admin/users/user_editgroup.php	(.../user_editgroup.php)	(revision 2085)
+++ trunk/admin/users/user_editgroup.php	(.../user_editgroup.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/addgroup_permissions.php
===================================================================
diff -u -N -r822 -r2536
--- trunk/admin/users/addgroup_permissions.php	(.../addgroup_permissions.php)	(revision 822)
+++ trunk/admin/users/addgroup_permissions.php	(.../addgroup_permissions.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/addrule.php
===================================================================
diff -u -N -r624 -r2536
--- trunk/admin/users/addrule.php	(.../addrule.php)	(revision 624)
+++ trunk/admin/users/addrule.php	(.../addrule.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/addreview_direct.php
===================================================================
diff -u -N -r983 -r2536
--- trunk/admin/addreview_direct.php	(.../addreview_direct.php)	(revision 983)
+++ trunk/admin/addreview_direct.php	(.../addreview_direct.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/modules/upgrade_lic.php
===================================================================
diff -u -N -r553 -r2536
--- trunk/admin/modules/upgrade_lic.php	(.../upgrade_lic.php)	(revision 553)
+++ trunk/admin/modules/upgrade_lic.php	(.../upgrade_lic.php)	(revision 2536)
@@ -1,7 +1,7 @@
 <?php 
 
   
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -44,7 +44,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/addlang_labels.php
===================================================================
diff -u -N -r962 -r2536
--- trunk/admin/config/addlang_labels.php	(.../addlang_labels.php)	(revision 962)
+++ trunk/admin/config/addlang_labels.php	(.../addlang_labels.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/tag_listing.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/tag_listing.php	(.../tag_listing.php)	(revision 374)
+++ trunk/admin/tag_listing.php	(.../tag_listing.php)	(revision 2536)
@@ -1,6 +1,6 @@
 <?php
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -43,7 +43,7 @@
             $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/config_search.php
===================================================================
diff -u -N -r927 -r2536
--- trunk/admin/config/config_search.php	(.../config_search.php)	(revision 927)
+++ trunk/admin/config/config_search.php	(.../config_search.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/advanced_view.php
===================================================================
diff -u -N -r1866 -r2536
--- trunk/admin/advanced_view.php	(.../advanced_view.php)	(revision 1866)
+++ trunk/admin/advanced_view.php	(.../advanced_view.php)	(revision 2536)
@@ -39,7 +39,7 @@
 $b_topmargin = "0";
 //$b_header_addon = "<DIV style='position:relative; z-Index: 1; background-color: #ffffff; padding-top:1px;'><div style='position:absolute; width:100%;top:0px;' align='right'><img src='images/logo_bg.gif'></div><img src='images/spacer.gif' width=1 height=15><br><div style='z-Index:1; position:relative'>";
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -82,7 +82,7 @@
             $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/tools/sql_query.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/tools/sql_query.php	(.../sql_query.php)	(revision 374)
+++ trunk/admin/tools/sql_query.php	(.../sql_query.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/user_mail.php
===================================================================
diff -u -N -r860 -r2536
--- trunk/admin/users/user_mail.php	(.../user_mail.php)	(revision 860)
+++ trunk/admin/users/user_mail.php	(.../user_mail.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/adduser_items.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/users/adduser_items.php	(.../adduser_items.php)	(revision 1566)
+++ trunk/admin/users/adduser_items.php	(.../adduser_items.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/config_lang.php
===================================================================
diff -u -N -r822 -r2536
--- trunk/admin/config/config_lang.php	(.../config_lang.php)	(revision 822)
+++ trunk/admin/config/config_lang.php	(.../config_lang.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/adduser_permissions.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/users/adduser_permissions.php	(.../adduser_permissions.php)	(revision 1566)
+++ trunk/admin/users/adduser_permissions.php	(.../adduser_permissions.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/editor/FCKeditor/css/fck_editorarea.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/editor/FCKeditor/css/fck_editorarea.php	(.../fck_editorarea.php)	(revision 374)
+++ trunk/admin/editor/FCKeditor/css/fck_editorarea.php	(.../fck_editorarea.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/cat_select.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/cat_select.php	(.../cat_select.php)	(revision 1566)
+++ trunk/admin/cat_select.php	(.../cat_select.php)	(revision 2536)
@@ -18,7 +18,7 @@
 $b_header_addon = "<DIV style='position:relative; z-Index: 1; background-color: #ffffff; padding-top:1px;'><div style='z-Index:1; position:relative'>";
 
 $pathtoroot="";
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -61,7 +61,7 @@
      $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/logs/summary.php
===================================================================
diff -u -N -r822 -r2536
--- trunk/admin/logs/summary.php	(.../summary.php)	(revision 822)
+++ trunk/admin/logs/summary.php	(.../summary.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/category/addcategory_relations.php
===================================================================
diff -u -N -r822 -r2536
--- trunk/admin/category/addcategory_relations.php	(.../addcategory_relations.php)	(revision 822)
+++ trunk/admin/category/addcategory_relations.php	(.../addcategory_relations.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/editor/editor_new.php
===================================================================
diff -u -N -r1759 -r2536
--- trunk/admin/editor/editor_new.php	(.../editor_new.php)	(revision 1759)
+++ trunk/admin/editor/editor_new.php	(.../editor_new.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##    result in revocation of the license and support    ##
 ##  privileges along maximum prosecution allowed by law. ##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
      $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/browse.php
===================================================================
diff -u -N -r1644 -r2536
--- trunk/admin/browse.php	(.../browse.php)	(revision 1644)
+++ trunk/admin/browse.php	(.../browse.php)	(revision 2536)
@@ -85,7 +85,7 @@
             $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/addlang_export_result.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/config/addlang_export_result.php	(.../addlang_export_result.php)	(revision 374)
+++ trunk/admin/config/addlang_export_result.php	(.../addlang_export_result.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/addtheme.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/config/addtheme.php	(.../addtheme.php)	(revision 1566)
+++ trunk/admin/config/addtheme.php	(.../addtheme.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/help/credits.php
===================================================================
diff -u -N -r898 -r2536
--- trunk/admin/help/credits.php	(.../credits.php)	(revision 898)
+++ trunk/admin/help/credits.php	(.../credits.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/importlang_progress.php
===================================================================
diff -u -N -r898 -r2536
--- trunk/admin/config/importlang_progress.php	(.../importlang_progress.php)	(revision 898)
+++ trunk/admin/config/importlang_progress.php	(.../importlang_progress.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/install/prerequisit_errors.php
===================================================================
diff -u -N -r1990 -r2536
--- trunk/admin/install/prerequisit_errors.php	(.../prerequisit_errors.php)	(revision 1990)
+++ trunk/admin/install/prerequisit_errors.php	(.../prerequisit_errors.php)	(revision 2536)
@@ -3,7 +3,7 @@
 define('THIS_FILE', 'admin/install/prerequisit_errors.php');
 
 $pathtoroot = "";
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   //$path=dirname(realpath(__FILE__));PATH_TRANSLATED
   $path=dirname(realpath(__FILE__));
@@ -47,7 +47,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/email_edit.php
===================================================================
diff -u -N -r954 -r2536
--- trunk/admin/config/email_edit.php	(.../email_edit.php)	(revision 954)
+++ trunk/admin/config/email_edit.php	(.../email_edit.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/category/addcategory_permissions.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/category/addcategory_permissions.php	(.../addcategory_permissions.php)	(revision 374)
+++ trunk/admin/category/addcategory_permissions.php	(.../addcategory_permissions.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/user_groups.php
===================================================================
diff -u -N -r822 -r2536
--- trunk/admin/users/user_groups.php	(.../user_groups.php)	(revision 822)
+++ trunk/admin/users/user_groups.php	(.../user_groups.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/modules/addmodule.php
===================================================================
diff -u -N -r2067 -r2536
--- trunk/admin/modules/addmodule.php	(.../addmodule.php)	(revision 2067)
+++ trunk/admin/modules/addmodule.php	(.../addmodule.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/user_addimage.php
===================================================================
diff -u -N -r898 -r2536
--- trunk/admin/users/user_addimage.php	(.../user_addimage.php)	(revision 898)
+++ trunk/admin/users/user_addimage.php	(.../user_addimage.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/group_mail.php
===================================================================
diff -u -N -r860 -r2536
--- trunk/admin/users/group_mail.php	(.../group_mail.php)	(revision 860)
+++ trunk/admin/users/group_mail.php	(.../group_mail.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/addlang_email.php
===================================================================
diff -u -N -r954 -r2536
--- trunk/admin/config/addlang_email.php	(.../addlang_email.php)	(revision 954)
+++ trunk/admin/config/addlang_email.php	(.../addlang_email.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/email/do_send.php
===================================================================
diff -u -N -r534 -r2536
--- trunk/admin/email/do_send.php	(.../do_send.php)	(revision 534)
+++ trunk/admin/email/do_send.php	(.../do_send.php)	(revision 2536)
@@ -13,7 +13,7 @@
 ##  privileges along maximum prosecution allowed by law. ##
 ##############################################################
 //$pathtoroot="";
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -56,7 +56,7 @@
      $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/head.php
===================================================================
diff -u -N -r1510 -r2536
--- trunk/admin/head.php	(.../head.php)	(revision 1510)
+++ trunk/admin/head.php	(.../head.php)	(revision 2536)
@@ -1,5 +1,5 @@
 <?php
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -42,7 +42,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/category/addimage.php
===================================================================
diff -u -N -r898 -r2536
--- trunk/admin/category/addimage.php	(.../addimage.php)	(revision 898)
+++ trunk/admin/category/addimage.php	(.../addimage.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/category/category_maint.php
===================================================================
diff -u -N -r952 -r2536
--- trunk/admin/category/category_maint.php	(.../category_maint.php)	(revision 952)
+++ trunk/admin/category/category_maint.php	(.../category_maint.php)	(revision 2536)
@@ -14,7 +14,7 @@
 ##############################################################
 if(!defined('CACHE_PERM_CHUNK_SIZE'))define('CACHE_PERM_CHUNK_SIZE',30);
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   	$path = dirname(realpath(__FILE__));
   	if( strlen($path) )
Index: trunk/admin/tools/sql_result.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/tools/sql_result.php	(.../sql_result.php)	(revision 374)
+++ trunk/admin/tools/sql_result.php	(.../sql_result.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/editor/FCKeditor/fckeditor.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/editor/FCKeditor/fckeditor.php	(.../fckeditor.php)	(revision 374)
+++ trunk/admin/editor/FCKeditor/fckeditor.php	(.../fckeditor.php)	(revision 2536)
@@ -17,7 +17,7 @@
 
 // The editor base path
 // You have to update it with you web site configuration
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -60,7 +60,7 @@
      $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/help/help.php
===================================================================
diff -u -N -r1238 -r2536
--- trunk/admin/help/help.php	(.../help.php)	(revision 1238)
+++ trunk/admin/help/help.php	(.../help.php)	(revision 2536)
@@ -1,6 +1,6 @@
 <?php
 
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -43,7 +43,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/editor/editor.php
===================================================================
diff -u -N -r1566 -r2536
--- trunk/admin/editor/editor.php	(.../editor.php)	(revision 1566)
+++ trunk/admin/editor/editor.php	(.../editor.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##    result in revocation of the license and support    ##
 ##  privileges along maximum prosecution allowed by law. ##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
      $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/addgroup.php
===================================================================
diff -u -N -r1000 -r2536
--- trunk/admin/users/addgroup.php	(.../addgroup.php)	(revision 1000)
+++ trunk/admin/users/addgroup.php	(.../addgroup.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/backup/restore1.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/backup/restore1.php	(.../restore1.php)	(revision 374)
+++ trunk/admin/backup/restore1.php	(.../restore1.php)	(revision 2536)
@@ -1,7 +1,7 @@
 <?php 
 
   
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -44,7 +44,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/category/addpermission_modules.php
===================================================================
diff -u -N -r898 -r2536
--- trunk/admin/category/addpermission_modules.php	(.../addpermission_modules.php)	(revision 898)
+++ trunk/admin/category/addpermission_modules.php	(.../addpermission_modules.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/backup/restore2.php
===================================================================
diff -u -N -r534 -r2536
--- trunk/admin/backup/restore2.php	(.../restore2.php)	(revision 534)
+++ trunk/admin/backup/restore2.php	(.../restore2.php)	(revision 2536)
@@ -1,5 +1,5 @@
 <?php   
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -42,7 +42,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/addlang_export.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/config/addlang_export.php	(.../addlang_export.php)	(revision 374)
+++ trunk/admin/config/addlang_export.php	(.../addlang_export.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/backup/restore3.php
===================================================================
diff -u -N -r534 -r2536
--- trunk/admin/backup/restore3.php	(.../restore3.php)	(revision 534)
+++ trunk/admin/backup/restore3.php	(.../restore3.php)	(revision 2536)
@@ -3,7 +3,7 @@
 $admin = 1;
 $restore_inport = 1;
                                                                  
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -46,7 +46,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/index.php
===================================================================
diff -u -N -r2310 -r2536
--- trunk/admin/index.php	(.../index.php)	(revision 2310)
+++ trunk/admin/index.php	(.../index.php)	(revision 2536)
@@ -13,7 +13,7 @@
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
 $pathtoroot = "";
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -56,7 +56,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/backup/restore4.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/backup/restore4.php	(.../restore4.php)	(revision 374)
+++ trunk/admin/backup/restore4.php	(.../restore4.php)	(revision 2536)
@@ -1,5 +1,5 @@
 <?php
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -42,7 +42,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/banuser.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/users/banuser.php	(.../banuser.php)	(revision 374)
+++ trunk/admin/users/banuser.php	(.../banuser.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/config/addcustomfield.php
===================================================================
diff -u -N -r2453 -r2536
--- trunk/admin/config/addcustomfield.php	(.../addcustomfield.php)	(revision 2453)
+++ trunk/admin/config/addcustomfield.php	(.../addcustomfield.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/banlist_apply.php
===================================================================
diff -u -N -r534 -r2536
--- trunk/admin/users/banlist_apply.php	(.../banlist_apply.php)	(revision 534)
+++ trunk/admin/users/banlist_apply.php	(.../banlist_apply.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/addgroup_users.php
===================================================================
diff -u -N -r2125 -r2536
--- trunk/admin/users/addgroup_users.php	(.../addgroup_users.php)	(revision 2125)
+++ trunk/admin/users/addgroup_users.php	(.../addgroup_users.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/users/adduser_groups.php
===================================================================
diff -u -N -r2082 -r2536
--- trunk/admin/users/adduser_groups.php	(.../adduser_groups.php)	(revision 2082)
+++ trunk/admin/users/adduser_groups.php	(.../adduser_groups.php)	(revision 2536)
@@ -12,7 +12,7 @@
 ##	   result in revocation of the license and support		##
 ##	 privileges along maximum prosecution allowed by law.	##
 ##############################################################
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -55,7 +55,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else
Index: trunk/admin/backup/export1.php
===================================================================
diff -u -N -r374 -r2536
--- trunk/admin/backup/export1.php	(.../export1.php)	(revision 374)
+++ trunk/admin/backup/export1.php	(.../export1.php)	(revision 2536)
@@ -1,5 +1,5 @@
 <?php  
-if(!strlen($pathtoroot))
+if( !(isset($pathtoroot) && $pathtoroot) )
 {
   $path=dirname(realpath(__FILE__));
   if(strlen($path))
@@ -42,7 +42,7 @@
 	  $p = "";
       }
     }
-    if(!strlen($pathtoroot))
+    if( !(isset($pathtoroot) && $pathtoroot) )
       $pathtoroot = ".".$pathchar;
   }
   else