From a02f3f73cf9567f5080d30aa230826072bfc9bc7 Mon Sep 17 00:00:00 2001
From: Waheed Ahmed <waheed.ahmed@arbisoft.com>
Date: Tue, 29 Apr 2014 18:36:07 +0500
Subject: [PATCH] Fixed advanced editor not working due to cheatsheet
 undefined. STUD-1514

---
 common/lib/xmodule/xmodule/js/src/problem/edit.coffee | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/common/lib/xmodule/xmodule/js/src/problem/edit.coffee b/common/lib/xmodule/xmodule/js/src/problem/edit.coffee
index 29e95dade5f8..0bc9d39b18c3 100644
--- a/common/lib/xmodule/xmodule/js/src/problem/edit.coffee
+++ b/common/lib/xmodule/xmodule/js/src/problem/edit.coffee
@@ -48,7 +48,8 @@ class @MarkdownEditingDescriptor extends XModule.Descriptor
   ###
   onShowXMLButton: (e) =>
     e.preventDefault();
-    @addRemoveCheatsheetCSS()
+    if @cheatsheet != undefined
+      @addRemoveCheatsheetCSS()
     if @confirmConversionToXml()
       @createXMLEditor(MarkdownEditingDescriptor.markdownToXml(@markdown_editor.getValue()))
       # Need to refresh to get line numbers to display properly (and put cursor position to 0)