I'm having trouble importing .obj or .fbx props and textures into iClone 8.  Say from TurboSquid or CGTrader. If the prop comes with a textures file, I then have to apply those textures by hand into each mesh of the prop. Tedious but workable.  If the prop is an .obj file with only the .mtl file included, I can't get at the textures at all.
I see from a four-year-old forum discussion that this problem was to be fixed in a future version of iClone. I have the current edition, but still cannot figure out how to solve this problem.
FWIW, iClone is on my C: drive, while me projects are on D:. I download the import files to D: and work from there. 
What am I doing wrong?
Thanks.