I don't import complex scenes, and I don't have problems importing simple ones.

I compose single items in Poser Pro, such as a person or a building, or maybe a person sitting on a chair, but I build my scenes in Vue. My Poser import is configured to use Poser Pro also.

(And although I don't normally use the Poser shaders, I did test to see whether they ended up green and indeed they did. Vue 7 Infinite.)