Thanks Laurie! My PP12 version says 9.0.1.18621, I'm not sure of that is the latest.

I installed it around January. I know I installed at least one SR, but i haven't followed to see if anything new came out in last few months, and don;t remember what sr it was at in January.

I'm doing render passes, without the lights (turned off, not deleted) and IDL emitters only, there is no smudging.  Also, I'm raytracing. Light passes are still rendering.

Edit.. also, no occlusion on the lights.  I'll post render passes side by side when done.

Render settings attached.

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Renderosity Store  Personal nick: Conniekat8
Hi, my name is "No, Bad Kitteh, NOO", what's yours?