Originally Posted by MojoBeast
Sounds a lot like this issue, which seems to be caused by a corrupted NPC body somewhere in your world

There Is a workaround for it if you can go back to an old save and figure out where the offending "dead" body is - for details read this thread!

https://forums.larian.com/ubbthreads.php?ubb=showflat&Number=902423&nt=3&page=1

Thank you for offering a solution but sadly this didn't help, proceeded to go back to an earlier save and pick up every dead body that me and my party had a hand in.

Still didn't help and the game is still proceeding to crash.

Also as a side note, I don't have a save before the mountain pass.. This still feels like a wild oversight.