From e1230d802c03edebb425bdc075f3ec4583bc7b7a Mon Sep 17 00:00:00 2001
From: Alexander Ebert <ebert@woltlab.com>
Date: Tue, 15 Nov 2011 17:02:27 +0100
Subject: [PATCH] Fixed response data method

---
 wcfsetup/install/files/js/WCF.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wcfsetup/install/files/js/WCF.js b/wcfsetup/install/files/js/WCF.js
index be9614fb13..576d4648c4 100644
--- a/wcfsetup/install/files/js/WCF.js
+++ b/wcfsetup/install/files/js/WCF.js
@@ -3356,7 +3356,7 @@ $.widget('ui.wcfAJAXDialog', $.ui.dialog, {
 		}
 
 		// AJAXProxy
-		if ($data.returnValues[key]) {
+		if ($data.returnValues && $data.returnValues[key]) {
 			return $data.returnValues[key];
 		}
 		// PackageInstallation
-- 
2.20.1