Originally posted by Zen:

Unmodded. Solo. Several crashes now every gaming session - when I had none at all prior to the H&H update. Repeatedly losing so much progress it is hard to play now at all. And I love the game. Even play between crashes is soured due to expecting yet another crash. Game stability please Devs.

did you tried an reinstall and/or checked if you using the latest gpu drivers? friend of mine had the same, he only had to install his updates and verified game data in steam, not a single crash after that.