Yes I rebooted computer. I've done all the steps. I get the error code at the activation. Prss"F1" at main menu to activate trainer,Game found! It has the green light even.
From the readme/instructions:
This game creates code on the fly.
To activate the trainer you must be ingame and your health / stamina
must be visible on the screen. Now open your inventory.
Press F1 to activate the trainer and listen for 'Trainer Activated'.
Did you try this?