There seem to be several different pathfinding crashes at 0.0 with npcs fighting each other. You just need to teleport near enough for the npcs to fight each other. It will eventually crash. Use the save below.
some of the different backtraces
Marzo Sette Torres Junior
Does this still happen with rev 7317 and starting from a non-broken save (i.e., a save from either before rev 7303 or from rev 7317 and after?