Everyone but you from the caravan is destined to die, one way or another. Sorry if I wasn't clear.
No, you don't need to start over, I think. I had no problems installing a different dll and loading an earlier save, but I restarted anyways.
I'm using options recommended by /v/.http://oweeh6jcqx3aoey2.onion.ws/v/thread/389742528/#389747016
The option "remove combat-only restrictions" makes summoned weapons delete previously held items after combat.
The "save before transitions" option shouldn't be used at all. It got me stuck outside the caravan and unable to enter the ruins.