I'm not exactly sure how this relates to the discussion, but it might be why you're getting the reflection. For some reason Bryce does something involving the ambience and diffuse on transparent objects even when they are both set to zero. Try this as an experiment. Render one bryce transparency with diffuse/ambient set to zero and the color set to white. Then do the same thing, but with color set to black. I think I might be onto something, but don't quite know what it is. This may also be the same with some of the other channels like mettalicity, etc. Hmmm...

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Barbequed Pixels?

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