Many of you may have tried using the trainer on the latest version of the game and get the "no game data" error. I found the fix:
Start the trainer and game as usual but don't press F1.
Create your character and begin the level.
Once in, open the inventory window and pick up an item from your inventory.
Now press F1.
You should then hear "Trainer activated" and breath a sigh of relief.
Are you pressing F1 while you still have the item in-hand (floating off the inventory screen)?
Uhm, did you see the Info text that comes with the Trainer? There are some particularly detailed instructions for using this trainer that are more than the usual trainer text.
* Updated game trainers and cheats daily
* Get notified when new cheats are added
* Request which games get new trainers
* Priority support with any problem