Index: trunk/admin/modules/addmodule.php
===================================================================
diff -u -r2853 -r4977
--- trunk/admin/modules/addmodule.php	(.../addmodule.php)	(revision 2853)
+++ trunk/admin/modules/addmodule.php	(.../addmodule.php)	(revision 4977)
@@ -52,39 +52,34 @@
 
 
 
+// 1. get list of modules installed in system
 $objModules->Clear();
 $sql = "SELECT * FROM ".GetTablePrefix()."Modules";
-
 $objModules->Query_Item($sql);
 
 $objModList = new clsModList();
 
 $path = $pathtoroot;
 
+// 2. get folders on HDD, that probably are modules, but not installed yet
 $new = array();
-if ($dir = @opendir($path))
-{
-  while (($file = readdir($dir)) !== false)
-  {
-   if($file !="." && $file !=".." && substr($file,0,1)!="_")
-   {
-       if(is_dir($path.'/'.$file))
-       {
-           $inst_file = $path.'/'.$file.'/'.$admin."/install.php";
-           if(file_exists($inst_file))
-           {
-               if(!$objModules->ModuleInstalled($file))
-               {               
-                 $new[$file] = $inst_file;
-               }
-           }
-       }
-   }
-  }
-  closedir($dir);
+if ($dir = @opendir($path)) {
+	while (($file = readdir($dir)) !== false) {
+		if ($file !="." && $file !=".." && substr($file,0,1)!="_") {
+			if (is_dir($path.'/'.$file)) {
+				$inst_file = $path.'/'.$file.'/'.$admin."/install.php";
+				if (file_exists($inst_file)) {
+					if (!$objModules->ModuleInstalled($file)) {
+						$new[$file] = $inst_file;
+					}
+				}
+			}
+		}
+	}
+	closedir($dir);
 }
 
-foreach($new as $mod => $file)
+foreach ($new as $mod => $file)
 {
     $m = new clsModule();
 
@@ -109,9 +104,11 @@
 		}
 		    	
     	if ($result) {
+    		// prerequisit check is ok
     		$data["Url"] = "<A HREF=\"".$rootURL.$mod."/admin/install.php?env=".BuildEnv()."&redirect=1&admin=1\">$status</A>";
     	}
     	else {
+    		// prerequisit check failed
     		$show_errors = true;
     		$data["Url"] = '<span style="color: #FF0000; cursor: hand; cursor: pointer" onClick="javascript:CreatePopup(\'ModuleErrors\', \''.$rootURL.'admin/install/prerequisit_errors.php?module='.strtolower($mod_tmp_name).'\');">'.$pre_error.'</span>';
     	}