Anyone else get this error?
Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back
must match the type and position of the controls added during the initial request.
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
This happens when I click 'delete section' and then answer yes to the popup...