Since the hot-fix, long rests cause CTDs.
Attempting the long rest does not consume camp supplies. Instead, the stack counter goes from 1 to 0 and the long rest dialogue box gets stuck. You cannot close it. If you try to click full rest/partial rest again with no camp supplies selected, nothing happens. If you do select camp supplies, whether they're the ones reduced to 0, or another set, the game crashes to desktop. If you only do a partial rest, you cannot select camp supplies and you cannot get rid of the dialogue box.
I've confirmed this on numerous characters at different stages of the game.