Ok, so I'm completly clueless. I bought the first release of the game (actually preordered it before it was released 3 years ago). Played it, finished it, it was fun. About a year ago I reinstalled it, registered online and installed Enhanced Edition. It was running pretty fine. Now I (once again) wanted to play the game for a bit, installed the game from the original DVD, went on to install EE (only a digital download, if that changes anything) and that's where the actual problem starts - during the verification process, it says that I don't have a registered copy on my account. When I try to register it with my CD-key, it says that it has already been used and I can't register the game with it (I don't know how exactly does the message look like in english - I'm polish and using a polish version). I've even searched through my e-mails and I still have got the one confirming that I have indeed registered the game on the same account with same e-mail address and with the exact same CD-key... What can I do to be able to *convince* the installer that I have registered the game and can use the EE? I could play without it, but without EE the game runs much less smooth on my old PC...