I have re-installed steam, tried the trainer "fix" for steam's screw up, turned off my AV, using Safari not IE 10, but would love to uninstall it. Please, almost every game I own is steam purchased, and now my trainers won't work on a single one of them, no matter what I do. Thank you. Oh, and IE 10 refuses to uninstall because it came already installed. >< It's not listed anywhere in my system that I know how to access.
My apologies: the trainer does not begin when the F1 button is used. There is no "Activated" verb, and none of the trainer keys work inside the game. The trainer literally does not work, from pressing F1 (failure) to attempting to use the numpad keys in the game. I hope that clears it up a little.