Yeah, I debated that, but it was buggy by many reports.I have a whole new problem anyway. I think it is a bug. I cannot click on the apply to object button on parametric mapping. I setup all 25 layers no problem then couldn't access that button anymore. Completely restarted and same thing. I loaded a tree to see...same thing. One of the trees actually thru me out of carrara when I tried to goto obj tab. Totally weird. Look at the pic to the right the button is blank and clicking does nothing.

No need to think outside the box....
    Just make it invisible.