Index: trunk/admin/help/install_help.php
===================================================================
diff -u -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