EDIT: The crash seems to be caused by standing in an army while casting Summon Wilding or Famine. If I move the sovereign to a separate tile, then both spells cast without crashing.
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I get a crash on Summon Wilding, but I'm getting a crash on Famine (summon troll?) now also. Earlier in the game, Famine was castable without crashing.
Dump from Summon Wilding
Dump from Famine
Save