MistyLaraPrincess; tried that and scene is black. So it isn't the couch. Suggests it's reflecting something. Good suggestion.

SamTherapy; I've been experimenting/trying to learn about IDL. On numerous other threads the advice has been to turn off AO, ambient and translucence and only put them back on for the materials you decide to (emitters and such). Also, to delete all lights and start from scratch. With the lights gone the scene should be black; all threads I have read so far say that if you can see stuff in the preview window it means there is still an emitter somewhere or some other lightsource. That's what I'm trying to clarify. I have had issues lighting this scene but how do I know if the scene is being effected by the 'glowing stuff' if I have no point of comparison? This is an existing scene that had been lit through normal Poser lighting using AO and IBL that I was practicing doing in IDL and it was not behaving as anticipated.In any case I tried a render and some small items are just visible, but the scene is predominantly black. Perhaps any effect is minimal. To paraphrase Bagginsbill, I cannot take 'control' of a render if I don't know what's going on.

MissNancy; you may be right, however as I said there are hundreds if not thousands of material zones in this scene. Not checking them all.

I have noticed that every scene from Greenpots that I have (that come with its own scene file) also glow when you delete the lights. Myabe that's a point of comparison worth exploring, if any of you have a Greenpots product.

Thanks for the replies.