Index: branches/5.2.x/core/units/categories/categories_event_handler.php
===================================================================
diff -u -N -r14601 -r14602
--- branches/5.2.x/core/units/categories/categories_event_handler.php	(.../categories_event_handler.php)	(revision 14601)
+++ branches/5.2.x/core/units/categories/categories_event_handler.php	(.../categories_event_handler.php)	(revision 14602)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: categories_event_handler.php 14601 2011-10-03 08:18:42Z alex $
+* @version	$Id: categories_event_handler.php 14602 2011-10-03 08:35:06Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -323,16 +323,16 @@
 					}
 				}
 				else {
-					$object->addFilter('parent_filter', 'ParentId = '.$parent_cat_id);
+					$object->addFilter('parent_filter', '%1$s.ParentId = '.$parent_cat_id);
 				}
 			}
 
-			$object->addFilter('perm_filter', 'PermId = 1'); // check for CATEGORY.VIEW permission
+			$object->addFilter('perm_filter', TABLE_PREFIX . 'PermCache.PermId = 1'); // check for CATEGORY.VIEW permission
 			if ($this->Application->RecallVar('user_id') != USER_ROOT) {
 				// apply permission filters to all users except "root"
 				$groups = explode(',',$this->Application->RecallVar('UserGroups'));
 				foreach ($groups as $group) {
-					$view_filters[] = 'FIND_IN_SET('.$group.', acl)';
+					$view_filters[] = 'FIND_IN_SET('.$group.', ' . TABLE_PREFIX . 'PermCache.ACL)';
 				}
 				$view_filter = implode(' OR ', $view_filters);
 				$object->addFilter('perm_filter2', $view_filter);