I want to play a two player Skirmish game, one person attacking, one defending, but whenever I try to set it up in Skirmish Defense, even when the AI is not allocated to a slot, it still spawns AI actors on a third team. The description of Skirmish Defense reads: "Survive waves of AI-controlled enemies until they run out of gold, skirmish against human players, or both!" The way it's worded makes me feel as if I should be able to do 2 person survival, but it simply just won't let me do that.

I broke Skirmish Defense somehow, but you can get a fix here.