I am having the same issue, but it seems to be happening with something I am selling to vendor. As I always do before I rest at camp I go and sell, well this time I sold my junk and went to save and it crashed. I did some investigating and sold a few things at a time and tried to save after. First go around it saved than I sold the rest of my stuff and it crashed. Mind you before I did this I created a second save and it saved fine, sold an item saved the game and it saved. Sold the rest and went to save and it crashed. I tried the save file thing and that didn't work. I deleted all of my save files but two manuals and one auto and it still crashes. Last night when I played and had the crash happen for the first time it was on a full rest *spoiler* right after meeting the devil for the first time, which I assume that it was the auto save that crashed it and I lost my progress before that. So got on this am and played through what I had done last night and I manually saved just fine , until like I said above sold my items before I do a long rest and crashes every time. *shrugs
