Javascript error : " 'Sys' is undefined "

Posted by Simon on Stack Overflow See other posts from Stack Overflow or by Simon
Published on 2010-03-19T13:40:47Z Indexed on 2010/03/19 14:01 UTC
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Hi there,

I keep having an error when running my web application. The error does not cause a compilation error when on live server at least a javascript error and nothing else. But the real problem is when "debug" ... javascript error stops the compilation and I have to "Continue" three times before proceeding normally my debug. But this error occurs at every refresh the page. All this using Visual Studio.

After several hours of search on google, I saw that it was a problem with the ScriptManager and Ajax. The real problem is that I do not use any Ajax on this page but the ScriptManager is on the masterpage. Worse still, on any other page on the website, that may use Ajax or not, no javascript error! Only THIS page cause this error! Any suggestion?

Note that I usualy talk french so there's probably error and sorry for this!

EDIT

There's the 3 places were compilation stop.

1. Sys.WebForms.PageRequestManager._initialize('ctl00$ctl08', document.getElementById('aspnetForm')); 

2. Sys.WebForms.PageRequestManager.getInstance()._updateControls([], [], [], 90);

3. Sys.Application.initialize();

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