same here, trainer activates in mainmenu, then loading game...boom game closes instantly
Start the trainer then start the game and wait for it to load, including connecting to your Xbox live account. Then once it's time to get in your car hit F1 and wait for the activation sound. Also maybe think about disconnecting from the internet once you're in game, and you should be good to go.
This method works for me.
It's actually quite simple for me to give people more XP and Money. However, the function and way to do this might give you tons of both at the same time, as well as give you alot of other items (like completed roads, etc.)
I don't know if this would break the game or campaign or not. ALso, with the mega XP, you might jump from level 2 to let's say level 99. Does the game unlock things at each level along the way?
Before we drop a powerful option that might give people problems with their savegames and progress, I'd like some info or feedback.