1)few things ensure ur anti virus isnt blocking the trainer, put it on exception
2) start the game then start the trainer it usually works
3) do a compatibility troubleshoot to either windows 7 or windows XP SP3
4) check the trainer and your game ensure both are the same versions. if your game is updated and the trainer isnt do post a request for an update, if someone else made a request for an update just post your request at the same thread.
5) there isnt any number 5 haha get back to me if any of it help