This is the problem on a new mod of mine, and here is what I used.

I used yav_prop_leaftree.odf and used yav_prop_leafttreebranch.tga.option and yav_prop_leaftree1.msh.. whats wrong?

Horribly mutated transparentcy.
did you alter the texture at all?

It looks to me like you're missing a texture... Make sure you also have yav_tree_bark01.tga and yav_prop_leaftree_branch.tga in the folder with your .msh.

I modified the troopers skins (i am gonna brag for a while) but I didnt touch the trees at all...

the same thing happend for me, but, i copied the entire yavin folder. so basicly i had all the textures, but when munged and played, the leaves were gray. what in the world is wrong?

Sorry for the double post, but i copied the entire yavin folder.....yet the leaves on the trees are BLACK
What is wrong?

If you open the odf it tells you what texture the leaves need. For example, if we open:

yav_prop_leaftree.odf It tells us other odfs are attached. We're concerned with the two yav_prop_leafpatch odfs It's looking for yav_leaf.tga. The other leafpatch is looking for yav_leaf2.tga. Anyways, that the gist of how it works. Ya'll probably knew that, but I figured I'd share for those who didn't.

so I need to add all of these?
AttachOdf = "yav_prop_leafpatch"
AttachToHardPoint = "hp_branch_6"
AttachToHardPoint = "hp_branch_7"
AttachToHardPoint = "hp_branch_9"
AttachToHardPoint = "hp_branch_11"
AttachToHardPoint = "hp_branch_2"
AttachToHardPoint = "hp_branch_3"

AttachOdf = "yav_prop_leafpatch2"
AttachToHardPoint = "hp_branch_15"
AttachToHardPoint = "hp_branch_17"
AttachToHardPoint = "hp_branch_12"

AttachOdf = "yav_prop_godray"
AttachToHardPoint = "hp_branch_2"
AttachToHardPoint = "hp_branch_7"
AttachToHardPoint = "hp_branch_11
and
hoth_prop_grass.msh"
yav_leaf"
Or which do I need?

No, just make sure you have the textures for the lines I have in bold in the odfs I posted.