literally ALL of your problems are usually described here and the solution is here
www.cheathappens.com/trainer_troubleshooting.asp
wrong version or something blocking the trainer is the usual culprits..
best, Cal
Have just gone through that entire troubleshooting guide, it hasn't happened with any previous trainers from CH. That's mainly why I was like 'wtf...'
Pretty much I hit 'F1' and it says the trainer was activated. Hit single player and it doesn't even fade to a white screen - just stops dead in its tracks.
btw, if the game gets a few more patches along the way, are you gonna keep updating both versions, steam and retail, or would you choose the msot popular one? I jsut get worried. The steam version wasnt available in the UK, so that wasnt an option for me.
It makes me use this Uplay crap, which is fine but I've been fooling with this trainer and going over and over that troubleshooting guide but it keeps crashing when I hit load save.