[Hellfighter]

some times a special terrain been made and added to a map thats is outside the mod that was not added to that mod.

hate to say this but you need to get hold of the map maker who made them maps up and ask them about this error

check see if them maps have a readme file in them may have contact info on the map maker or the maker of them mods for it

what i understand is you can only host one mod at a given time! if you try to use another modded map that is not made tobe run under another mod you running can get a error.