I have a problem that totally eludes me. Therefore I seek advice from the masters of Poser.

In the picture you see the same prop.
On the left side (imported and textured obj.) before and on the right side after turning into a prop and reloading from library.
I modelled it in Cinema and exported to obj. I noticed this kind of disappearing with two other of my models. One common thing is that in the areas that don`t show up boolean operations were involved in creating the model. In Cinema everything is fine and normals seem ok. But in Poser !

Any clues to what went wrong during prop conversion -
Is it a Poser Problem?
Do I have to curse Cinema?
Or just simple human incompetence?

kelc