Photometric light problem.

[dennisqdw]

I have a model of a rigged man set to render in mental ray and created in max 2011 that I bought from turbosquid. I had a baffling problem that I just solved, but am sharing just in case anyone needs this info. I added a vray camera, some vray lights and put a default grey vray material on the model, and the strangest thing will happen. It will render correctly, but just hitting the render button again it will render incorrectly, and toggle back and forth between right and wrong on each render. When it is wrong it looks to me as if the normals of the model have been reversed. The model came with a bunch of photometric lights, that I had hidden (not sure if they were off or not), but once I deleted them everything renders fine.

[vlado]

It's odd; if you still keep the buggy file around, maybe you can send it to vray@chaosgroup.com so that we can investigate what is going on.

Best regards,
Vlado

[dennisqdw]

Yes I have it and I'll send it to you right now. Hope you can figure it out. --ds