Uhg. I'm about to give up.

Why is it so hard to find the (or even "a") place to report Poser bugs?

I long since lost that mantis link. I think the last bug I filed was for v5. Whichever one they first added cloth sims. I've hit another (well heaps, since) but this one just happened. I have a normal map attached to a physical surface node. The preview shows the normal affecting lighting on the texture as it should. When I change the subd level from 0 to anything, the normal map disappears from the preview. It still renders, but you can't see it in the preview. Hardly a critical bug. Still...