CTD in custom battle

[KingCnut]

I get a CTD everytime I try to fight a custom battle with a user defined settlement. As soon as I select a settlement type it CTDs is this normal? Is there any way to fix it?

[Stylix]

I get a CTD everytime I try to fight a custom battle with a user defined settlement. As soon as I select a settlement type it CTDs is this normal? Is there any way to fix it?

How To Play Custom Siege Battles

[KingCnut]

How To Play Custom Siege Battles

Thanks will rep when my post count is high enough!