2010 Q1 Ajax Javascript error on postback on Web User Control

[Imran Javed Zia]

Hi,

My Page has 3 RadTab and each tab page has a user conttol in it. This page was working fine with 2009 Q3. But we have updated to 2010 Q1 and now this page is giving javascript error on postbac calls.
It gives error document.getelementbyid() is not an object in some resource file and line number is in billions and when i do click on debug the IE 8 shows message "Source Code is not available for this location".
This page is working fine in Mozila Firefox. Further more this page works fine when i remove AjaxManager and AjaxProxyManager from User Controls.
Is there some issue in RAD AJAX with RadAjaxManager, RadAjaxManagerProxy, RADTab, RadMultiPage, And RadSplitter?
Thanks & Regards
Imran Javed Zia

[Lenny_shp]

Did you try with the latest build?

http://www.telerik.com/account/downloads/internal-builds.aspx?type=2&mvid=2179&pid=561