If you're using the trainer and your game is crashing after a short period, double check these things:
1. MAKE SURE YOU ARE USING THE RIGHT VERSION OF THE TRAINER
There are different versions of the game. The ORIGINAL RETAIL VERSION and ORIGINAL NO-CD VERSION are both 1.00.86 and the correct trainer is this one --> Link
The first patch that was released updated the game to 1.00.88. If this is the version you have, you need this one --? Link
2. MAKE SURE WINDOWS LIVE IS DISABLED
We've provided two .bat files with the trainer that should be extracted to your UAW install folder. When run, one file will disable Windows Live and one will turn it back on. It does this by renaming the UAWEA.exe.cat file to something different. You may need Administrator level privelege or right-click and Run as Administrator on the .bat file for this to work in Vista. You can also manually rename or move this file yourself to disable Windows Live.
If Windows Live has been properly disabled, when you run the game, you should receive this error --> Link
If you are not getting this error then Windows Live has NOT been deactivated properly and your game WILL CRASH once the trainer is in use. Windows Live enables anti-cheat scanning, even in single player mode and once it detects the trainer, the game will crash.