Anyone? I have tried starting from a blank v2.2 now and I'm getting the same :( I have even given full permissions to all users but to no avail... Its really odd! The site has been running fine for weeks on v2.0 in the exact same setup.
The error is not very descriptive. All I can suggest is to try to delete your temporary ASP.NET files (C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files)
Sorry I know its not, but that's all I get... Literally, when I load the front end I just get that? I am going to start again tonight and re-download everything, rebuild and try again and see if I get the same.
I am upgrading from v2.0 to v2.2... so I ran the v2.1 upgrade script, then the two v2.2 upgrade scirpts? That is correct isn't it?
Check your event viewer for actual errors. Sadly, nop shows that garbage screen if there are issues and you have to hope that the real error is in event log.