Just a couple of general texture questions. I've found workarounds for one issue, and troubleshot the other, and the last one is just a question that hopefully people who make characters can answer.
1) Why would a particular texture be absolutely unable to render properly under Uber-anything? UberAreaLight makes it look like it's got ringworm, and UberPoint and UberEnvironment, depending on relative intensity, vary from ringworm-looking to really blotchy and mottled to looking like its skin is flaking off in a zillion pieces. I thought it might have something to do with occlusion at first, but UberAreaLight doesn't have occlusion, and the texture didn't have a shader of any sort to activate occlusion. I added UberSurface2 to the texture to see if making it possible to control occlusion would help, but, well ... Uber. UberSurface + Uber lighting on that texture equals a character that merely looked moderately diseased. (On the other hand, I did discover that straight-up IBL works perfectly well in Studio, when I thought it was specific to Poser, so there's that. IBL with ambient occlusion, on the other hand ... not a good idea in Studio. Everything goes all neon-glowy. But I digress.)
2) Why would adding a displacement texture to a character make him render almost completely black? Granted, it wasn't his displacement -- he shipped with bump, but no displacement, and I needed to add UberSurface2 to him for other reasons, so I stuck in displacement textures for a character with a similar skin tone to see if that would be useful. Bad idea. Bad bad bad idea.
3) General question: what is the advantage in using bump over displacement, or displacement over bump? I've noticed that several recently purchased characters are shipping with one or the other, but not necessarily both.
Just curious, at this stage. Any information will be muchly appreciated.