I had a play with Dan Huling's sphere via PoseRay and there are a couple of problems.
1. I'm assuming you also downloaded the textures

They show up just fine in PoseRay
2. There are 17 materials defined although there are only 7 textures - bummer
3. The 17th texture is the engine exhaust - real bummer
I tried rearranging Groups to Materials in PoseRay to reduce the number of materials, but the groups didn't correspond to parts of the madel using the same textures - bummer
[attachthumb=#1]
Only "fixed" the hull texture
4. Most of the textures are tiled so I replaced the default shaders with an image map shader (Projection: object UV, size 0.2,0.2, repeat X and Y, Flip X and Y) and a reflective shader.
Trying Maxapyn's sphere... no... it's only in Max