Could not find UpdatePanel with ID 'xxx'. If it is being updated dynamically then it must be inside another UpdatePanel

Question

I have a page with Ajax Tab controls, within one of the tabs is a webcontrol that as a Telerik RadGrid, with Edit forms pointing to another web control. That edit form also cont

Answer 1

My page contains a few updatepanels. I fixed this error by making sure all of them were visible and didn't have display:none.

You can find which panel is causing the error by viewing the source of the page and searching for the ID the error is giving you.