Index: site_config_eh.php
===================================================================
--- site_config_eh.php	(revision 13805)
+++ site_config_eh.php	(working copy)
@@ -30,6 +30,10 @@
 		 */
 		function OnApplySiteConfigChanges(&$event)
 		{
+			if ( $event->MasterEvent->getEventParam('skip_site_config') ) {
+				return ;
+			}
+
 			if (!isset($this->_helper)) {
 				$this->_helper =& $this->Application->recallObject('SiteConfigHelper');
 			}