So, I found a rather nice free
sail boat I wanted to use... I'm not very good with models. Trying to figure it out. Anyways. When I loaded the original model into TG, it was all black, and I figured it was the part shaders. So I went to explore them only to find out there was nothing inside the Parts Shader. Nothing.
So I opened the file in Poseray and found it does, indeed, have group parts, but all but Wood say "TooBig01", "TooBig02", etc. The ship, when added to Terragen is quite massive in scale. The default "2000" amplitude mountain is dwarfed by it, and it get reasonable (probably still to big) proportions you must scale to 0.1. When I re-saved the object I was able to get the Wood Default Shader to appear within the Parts Shader, but all the "TooBig" groups did not export.
Any ideas?