Not sure what you mean. Light settings change from one image to another - I've had other items do the same thing under totally different lighting settings and conditions as well. I'm using 3 standard spotlights. I'm not using AO or IBL or anything fancy.

Render settings - doesn't seem to matter, either. At the moment I'm rendering via the Poser4 render engine (my pc HATES firefly - it blows up on me frequently). Anti-Alias, Use Bump Maps, Use Texture Maps and Cast Shadows are all checked. Ignore Shader Trees is NOT checked.

This has happened to me with the Firefly engine as well, so I know it's not a P4 engine-only thing. I'm currently using Poser7. I've got other examples, and it only seems to ocurr with prcedural textures that are from Poser5 or Poser6 natively...

~ Seliah