Hello I keep getting this error mesage when I go to download the
software

A critical error has occurred.
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.
Can you please help

jack