Some props etc offer both a preview and render material.
How ??
I'll warily side-step those meshes that offer neither {Spit !!}, but how do you go about adding a render material to something that only offers a 'preview' ?? Renders okay in Firefly, but not in Superfly...
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For the first time in ages, I've managed to crank my '3D Eye' into action. I'd acquired a simple FBX model of a gem on a stand on a base. It was texture mapped, but only as different areas of an un-zoned mesh.
So, I exported the FBX to OBJ/MTL, converted that to 3DS, pulled it into classic Draw3D and dissected the mesh. After several false-starts and many UNDOs, I managed to extract base, stand and gem as stand-alone 3DS files. Loaded them into Poser by turn, aligned. Tried to render. Iterative exasperation ensued...