I face the problem today and sick to resolve it thanks for Henrik Juhlin who post the solution here and i will do following more changes get rid of this issue http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/107/threadid/329762/scope/posts/Default.aspx Update following files from dnn 5.0.1 dnn installation setup to Main JS folder js/dnn.xml.js js/dnn.xml.jsparser.js js/dnn.xmlhttp.js js/dnn.xmlhttp.jsxmlhttprequest.js Note very important : after that clear your cache and close the browser. Execute the application again in new browser Regards Rashid Imran Bilgrami CEO Best Visualization