.Map :: MoHAA Mapping

I'm trying to compile my map, it normally works just fine, but this time I get an

*************************** ERROR **********************
Backwards tree volume

I don't know what the heck it means or how to fix it, can someone help me?

Try this forum "sticky" thread. Sticky means it is always at the top of the mapping forum.

/forum/viewtopic.php?t=2406