Asset imported into Cinema 4d has black textures

Hi,

I have googled this one quite a bit, without a fix.

I have taken the fbx file from an asset, put it in a directory. I have copied all the .mats to a sub folder called tex
I go into c4d, save as native, and matching up the location of the .mats
I turn everything off other than Color, but each .mat file only comes in as black.

What might I be doing wrong please?

Do’h.
.mat have nothing to do with it. Should have just stuck with my old friends, the jpg and tga