When previewing application in Web Simulator, in Web Inspector

/htdocs/js-lib/mwl-1.0.js:795 - <document onclick="void(0)" onblur="void(0)" onchange="void(0)"></document> will be dropped.
 - <html></html> will be dropped.
I tried to delete various stuffs already, still not working. I don't know what I've done wrong. It was working before. I tried previewing the application in Google Chrome and it seem to be working perfectly.

Please help.

Thank you!