found an interesting bug: I started a new game and after being dropped off at the beach and getting the movement tutorial I tried changing the sneak key to 'C', all buttons stopped working, I could look around with the mouse and the character turned to look but no button worked anymore. Movement, crouching, camera, map, even the menu key stopped working so I had to 'Alt-F4' and restart.
I will make a sacrifice to the dark gods and try again shortly, and this time I will not try to change key binds.