It's the same in Carrara 7, 6, and 5. I use the textures I have from any of the X Frogs and they work in AL09 and AL18 with no problems. Here's what happened: I downloaded 58 3DMAX // X Frog files. Someone had converted them from X Frog to dot MAX format. I in turn Downloaded the free 2009 version of 3DMAX and converted the files to Wavefront Object and they work just fine in everything except Carrara, but the kicker is that some of the file do work in Carrara, only the flowery and tropical trees and plants. As stated above the Broadleaf and Pinus varieties do not work in Carrara, any version of Carrara that I have.  

I would rather be Politically Incorrect,
Then have Politically Correct-Incorrectness!!!