Can you elaborate a little more on the problem, because I am confused as to what the problem is exactly. You were talking about a user control firstly, and then you said something about reinstalling a custom module. Did you enable the Viewstate from the page's properties? Also, is there a chance that you could record a video with the problem, so I can get a better understanding of it? Thanks in advance.
All the best,
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items