the ambience and specular features in milkshape 165 dont seem to show up on raw primtives x binary files exported to DBP full 5.
Its best to leave them be and use the internal commands I would think anyway.
The diffusion and emission seem to show up well from Ms3d165 into dbpfull5.
An Object not fully textured will dissapear in older DBP builds.
An Object not fully raw coloured with an emission would dissapear in older DBP builds
Wrap it completely with a simple texture or define an emission and diffusion colour.
what 3d package are you using mate?