The parts shader is empty in your TGD. When i import your model in a default new project there is not any problem.
Did you mess with the objects nodes in some way ? Your object is fine .
Try a new projects and import the object ones more and make a render. It should be OK , PeanutMocha .
Edit : Poseray didn't like your model (yeah i know you used it

) ! It could not show it properly. But TG2 did show it fine.