(I have not loaded your savegame)
Did you save the game right before the battle? You need to always save during your own turn, and not when a battle is about to start.
It's weird that the autoresolve should crash as well, at a later point. Seems there must be something else also affecting it.
Edit: No, it's just you having saved right before the battle, when I autoresolved it immediately crashed. Load up an earlier save and you should be fine.
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