Painting custom tree problem

I have several trees that were modeled in 3ds max and exported as FBX files for use with the Terrain Tree Painter. But they're some problems with parts of the tree ->

Any ideas about what is causing this?



I have yet to figure this out. The trees look completely fine when manually dragged out into the scene yet when placed into the Paint Tree tool the trunk and branches no longer show up. But the leaves look completely normal as does very bottom part of the trunk.

Updated Picture --->

I figured my problem out... A tree that you wish to paint on the terrain with must use 2 materials, one for the bark and one for the leaves. It will simply ignore any other materials after the first two. In my case I was using 4 (leaves, branches and two kinds of bark).

^ My information.

Thanks :]