I'm sorry for bumping, but those trees don't work...
1) I can't check if they need non-ingame textures because if I try to convert them to .mdl, I get an error 'unsupported file format'
I'm using War3fileconverter from wc3sear.ch
Never had problems with that tool
2) worse: if I open my map, import the models, all of them work exept for the 3 trees... and in fact I downloaded the pack just to get the trees
another strange thing: another tree I imported worked well, but stopped working when I imported your trees...
please, I really need those trees
(any other model, exept for the 4 trees, works perfectly)