I've been playing the game for the last week or so and I've finally gotten a character down to the 9th floor. Now all of the sudden the game keep crashing. The first one was right after I used a bookshelf, so I was like it must be that bookshelf bug. But then I restarted and it happened right after I took a side quest. Then it happen a third time but this time my character was just walking around. I've done nothing to the game or my computer to change anything today compared to last week so it's a bit baffling to me. I'm using Steam and I did check file integrity and everything seems to be fine.
Hmm. This sounds like some others have been saying. Nicholas has been trying to eradicate these, but the problem is when they're random and not reproducible. If you find a way to crash it 100% though please upload the save, it will be of incredible help.