Attached Link: http://www.renderosity.com/messages.ez?Form.ShowMessage=2254915

Found the referral to a bug

"There is a bug in reflections and refractions in Poser 6.
I had the same problem and emailed Curious Labs about it.
They said is a known bug and they said it will be fixed
in the service release. Sorry, but all these tips and hints
won't help any. Just have to wait until Curious Labs releases
the fix. "

Guess it's time to e-mail CL