Was fighting a tactical battle against some darklings. One of them used an ability against my sovereign (confusion?). I got a negative attack rating down from 120 and after i moved the game crashed to desktop. Tried to upload the debug.err to pastebin to link it here but it said file size was too big.

update: loaded the autosave and went to the same mobs and it didn't crash this time. However the game crashed a few turns later on the strategic map. Odd to get two crashes so close together as the game hasn't crashed on me ever before.