Poser 6 makes no difference. Many Poser textures use a reflection map, because Poser used not to support proper reflection at all, and still doesn't as standard. When Vue sees a Poser texture with a reflection map, it simply ignores this and applies 100% reflectivity and the result is a mirrored surface. This is despite the fact that Vue 5 can also use reflection maps. The result is the mirror effect that you see in your picture.

Why Vue 5 does this I cannot think. I'm fed up with fixing it over and over again. If Vue can read the texture map and the transparency map, how hard can it be to read the reflection map?