It could be that you're running out of memory, which is causing the game to crash. Whatever the update was might have increased your memory usage enough to push you over, what your system can handle. Increasing the size of your pagefile should fix that.
It might also be something completely different ofc. To really see what's happening, we'll need your output log (player.log on Mac and Linux). This guide explains where to find it and suggests some sites to upload it to, as we can't attach files here on Steam.