AjaxToolkit: Component not found exception with tabcontrol

Hi,

there is already a thread, but that thread is more than 2 years old and the issue is not solved by the provides solution.

I hope in the meantime, somebody has a solution for the "tabcontainer component not found issue".

I'm using the AjaxToolkit Version 3.0.30930.28736 in a SharePoint 2010 (Compatible version for SP210) environment with IE9.

The issue "Component not found" (Sys.InvalidOperationException) appears randomly, but if I bind more data to the control into the tabcontainer, the issue appears more often.

Is there any solution/workaround for this issue?

Thanks in advance for your support!

Regards,

Martin

PS: It seems to be that the Version  3.0.30930.28736  of ajaxcontroltoolkit is latest one which is compatible with SharePoint 2010 and .NET 3.5.