Anyone having problems with crashing - Try CLOSING your inventory after Num1, and then use Num2-7, save your game as the instructions tell you to do, load your save, and your stats should be changed.
Edit: To clarify, I was having the exact same issue.
[Edited by Thwackinator, 9/25/2018 9:03:46 PM]
I tried doing this as you said, I closed inventory after Num1, used num2-7, saved the game, loaded the game and as soon as I tried to do anything, ctd. I hope the devs didn't included some kind of anti-cheat crap for this after all their talk of not caring how people play their single player games. 🤔