Ok I've disabled all anti-virus software and tried all compatibilities and run as admin and nothing... simply won't open. Its so weird, some trainers run fine even with anti-virus software on. Its an old game but its still one of my favs and I'd like to muck around with it.
according to site policy i should delete this topic, but i figure if i do that you'll just make another topic asking why the first one was deleted...Link anything trainer related needs to be posted on the official trainer topic, otherwise it will be deleted on sight.
as for your trainer problem, I've never heard of a trainer application not opening. delete it and reinstall. you may also need to start the trainer after you've started the game depending on the instructions in the trainer's readme file. if none of that helps, repost your problem in the main trainer thread.