I am also having this problem, after fight game will crash as soon as I select my character or try to go to camp. The companions can port to camp with no problems. I've tried all these fixes as well and it is still happening.
I will try to go back (*sigh* unfortunately way back) to a point before this and start again.
Also, Auntie Ethel does not appear right away and while waiting, if I cast a shield or anything, all the characters so as *Surprised* as though she is there but she is not. She only appears after I throw a spell or fire at the bridge.
I am playing on pc, game is on Steam
