Doodad Model File

I just made a unit (Its a Custom Version of a Tree of Life) and I tried to make it's model file a Icecrown Canopy Tree but when i went to place it the model was all white and corrupted. How can I fix it?

The tree models don't actually have skins on them. Rather, all of a certain type of tree read from a standard skin file, and they don't read from that when they're used as unit models. Someone made a set of trees that were altered so that they had the right skins. If I were you, I'd search around for that.

Well I got WE Unlimited so i used one of their unit trees and when i go to build it in the game it won't show up. Any one know why?

plz someone tell me.

the 'Morph Unit Tutorial' at http://umswe.wc3campaigns.com/weu
also shows how to use the tree models