First time a trainer from here is giving me trouble ... completely freezes up my system when I press F1 at main menu so I have to reboot. No clue what it might be ...
What OS/IE and Anti Virus are you using?
Also have you modded the game?
I am having similar issues. When I press F1 nothing happens. It doesn't even say that the game cannot be found. It is doing this with Bioshock Infinite as well as this Skyrim trainer. I've disabled my antivirus and firewall so I'm not sure what else it could be. I'm using Comodo AV and Windows 8 64.
edit: Got them to work by running as administrator. Didn't need to do that before so didn't think of trying that until I was reading through support stuff.
[Edited by calfstad, 12/23/2013 12:18:44 AM]
I always adviser all trainer users to run steam and the trainer in admin mode as that usually sorts out most issues.