I have performed some test, regarding the desired scenario, but I was unable to replicate the experienced problem. Therefor, I would like to ask you to elaborate a bit more on your scenario. In addition, here
you could find our online demo, where a similar functionality is implemented. Please, note that the PageView associated with the RadTab should be added at the PageViewCreated
server side event.
the Telerik team
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed