I also had the issue with the game crashing anytime I entered or exited locations. To fix that I set the game to run in Windows XP SP 3 compatibility mode. Haven't had a crash since. To get the trainer to work though you have to then run the trainer in XP SP 3 mode as well.
With this the game is running perfect for me now. Thought I would post just incase it helps others out.
[Edited by Trumpett, 10/7/2011 9:27:41 PM]
[Edited by Trumpett, 10/7/2011 9:28:34 PM]
[Edited by Trumpett, 10/7/2011 9:29:04 PM]
* Updated game trainers and cheats daily
* Get notified when new cheats are added
* Request which games get new trainers
* Priority support with any problem