.Map :: MoHAA Mapping

Thanx PsychoE I thought I had a problem with the compiler, but turns out it was a problem with my map. (Imagine that) Thanks for steering a neewbie in the right direction.

When I try to compile a map with MBuilder I get the error message "Backwards tree volume" I'm sure all the paths are set correctly. Any ideas? The current locations of my files are:
Game dir=C:\Program Files\EA Games\MOHAA
Compiler dir=C:\Program Files\MOHAAtools
Map Source dir=C:\Program Files\EA ...