First boot up the game and then try activating it. Have you tried that? It works fine for me and I am using Steam version of the game.
@MrAntiFun
Thanks for the trainer and I saw a comment from you earlier about how to just alt tab the game and do cheats that way for hotkeys. This works fine for me so just ignore my statement about changing hotkeys. Good news is that this game doesn't crash on me when I alt tab since I am running in borderless window mode.
There was one glitch I ran into that I am a bit confused. When I tried to use the cheat for putting in gold amount I ended up getting like 999999 of some alchemy item which is odd. In fact I don't remember even touching the item amount slot at all. Though it only happened once which is not a big deal. Thought it was kinda amusing and most likely I may have accidentally pressed the wrong button lol.