Index: branches/unlabeled/unlabeled-1.39.8/core/kernel/event_manager.php
===================================================================
diff -u -r6863 -r6864
--- branches/unlabeled/unlabeled-1.39.8/core/kernel/event_manager.php	(.../event_manager.php)	(revision 6863)
+++ branches/unlabeled/unlabeled-1.39.8/core/kernel/event_manager.php	(.../event_manager.php)	(revision 6864)
@@ -357,16 +357,25 @@
 			$this->Application->StoreVar(rtrim('opener_stack_'.$wid, '_'), serialize($opener_stack));
 		}
 
-
+		/**
+		 * Used from relationship event handler
+		 *
+		 * @param string $t
+		 * @param Array $params
+		 * @param string $pass
+		 */
 		function openerStackPush($t, $params, $pass = 'all')
 		{
-			$opener_stack = $this->Application->RecallVar('opener_stack');
+			$wid = $this->Application->GetVar('m_wid');
+			$stack_name = rtrim('opener_stack_'.$wid, '_');
+			
+			$opener_stack = $this->Application->RecallVar($stack_name);
 			$opener_stack = $opener_stack ? unserialize($opener_stack) : Array();
 
 			$redirect_params = array_merge_recursive2(Array('m_opener' => 'u', '__URLENCODE__' => 1), $params);
 			$new_level = $this->Application->BuildEnv($t, $redirect_params, $pass, true);
 			array_push($opener_stack, 'index.php|'.ltrim($new_level, ENV_VAR_NAME.'=') );
-			$this->Application->StoreVar('opener_stack', serialize($opener_stack));
+			$this->Application->StoreVar($stack_name, serialize($opener_stack));
 		}
 
 		function registerHook($hookto_prefix, $hookto_special, $hookto_event, $mode, $do_prefix, $do_special, $do_event, $conditional)