NCF – Extended list of Neutral creatures.

Is there a way to check which creatures are present in the Fortress?

Either I'm not expressing my thoughts correctly, or you're not quite understanding me. A Fortress is a building on the map where you can upgrade creatures for money. So, when any hero enters the Fortress, except for a Dungeon hero, everything works, and alternative upgrades from the mod appear. But when a Warlock enters the Fortress, the game crashes immediately. And that's not even the biggest problem. The biggest problem is that the computer also enters the Fortress, and then the game crashes during its turn.