Index: trunk/admin/users/group_select.php
===================================================================
diff -u -r3668 -r3683
--- trunk/admin/users/group_select.php	(.../group_select.php)	(revision 3668)
+++ trunk/admin/users/group_select.php	(.../group_select.php)	(revision 3683)
@@ -84,20 +84,23 @@
 	switch ($source) {
 		case 'addcategory_permissions':
 			$SelectorType = 'radio';
-			$sql = 'SELECT DISTINCT(GroupId)
+			$exclude_sql = 'SELECT DISTINCT(GroupId)
 					FROM '.TABLE_PREFIX.'Permissions
 					WHERE CatId = '.$application->GetVar('CatId');
 			break;
 		
 		case 'adduser_groups':
 			$SelectorType = 'radio';
-			$sql = 'SELECT GroupId
+			$exclude_sql = 'SELECT GroupId
 					FROM '.$objSession->GetEditTable('UserGroup').'
 					WHERE PortalUserId = '.$application->GetVar('UserId');
 			break;
+		default:
+			$exclude_sql = '';
+			break;
 	}
 	
-	$skip_groups = $db->GetCol($sql);
+	$skip_groups = $exclude_sql ? $db->GetCol($exclude_sql) : Array();
 	$where_clause = $skip_groups ? 'GroupId NOT IN ('.implode(',', $skip_groups).')' : '1';
 	
 	$objGroups->LoadGroups('(Personal = 0) AND ('.$where_clause.')', trim($objConfig->Get('GroupSelect_SortField').' '.$order));