DiRT 3 Complete Edition Message Board  

1) trainer is looking for dirt3_game.exe to be running, 32 bit.

2) the trainer requires you to press F1 once the game is running. It may say it cannot find game until you press F1

best,
Cal

i just installed the game from scratch on steam
i ran it
it runs dirt3_game.exe which is 32 bit .exe

I have windows 7 64 bit OS

I have no idea why your trainer wont locate it. it activates fine here

best,
Cal