Index: branches/5.0.x/core/kernel/utility/temp_handler.php
===================================================================
diff -u -N -r12734 -r12776
--- branches/5.0.x/core/kernel/utility/temp_handler.php	(.../temp_handler.php)	(revision 12734)
+++ branches/5.0.x/core/kernel/utility/temp_handler.php	(.../temp_handler.php)	(revision 12776)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: temp_handler.php 12734 2009-10-20 19:28:11Z alex $
+* @version	$Id: temp_handler.php 12776 2009-10-25 12:44:49Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -319,6 +319,8 @@
 						$foreign_key_field = is_array($sub_table['ForeignKey']) ? $sub_table['ForeignKey'][$master['Prefix']] : $sub_table['ForeignKey'];
 						$parent_key_field = is_array($sub_table['ParentTableKey']) ? $sub_table['ParentTableKey'][$master['Prefix']] : $sub_table['ParentTableKey'];
 
+						if (!$foreign_key_field || !$parent_key_field) continue;
+
 						$query = 'SELECT '.$sub_table['IdField'].' FROM '.$sub_TableName.'
 											WHERE '.$foreign_key_field.' = '.$original_values[$parent_key_field];
 						if (isset($sub_table['Constrain'])) $query .= ' AND '.$sub_table['Constrain'];