We have an odd situation where a role (Committee) assigned to be allowed downloads and uploads cannot download or upload files, neither can it go to the next page!!
We have tried allowing All Users in the repository settings but that didn't work either.
Administrator works fine. The Committee role worked up until 5th May when someone uploaded a file. I was informed today that it has stopped working. We have made no site changes since the 5th. Wierd.
We have done a Windows update since the 5th though. Is it possible that the Administrator role uses a different slug of code for doPostBack?