For me because of some reason the achievements feature keeps turning off!But change to another computer, it work well.
The default achievements key is "J", you can check/change it in the game options.
Good! :)
If you load the game with other mods, and one of them has a new definition of "J", it could happen
I've also encountered this problem, and after reading your answer, I understand . O_O
:) ooo
