Can someone help me out with this compile?

[[C5]ACiD]

The maps not that big yet, and I havent been working on it that long, but when I compile now it gives me this message, does anyone know what the problem is and how to fix it?


************ ERROR ************
nummarkfaces == MAX_LEAF_FACES

[Leperous]

http://www.worldcraft.sprite-network.com/compiling.htm

It just means that you have an illegal solid somewhere