I've seen this kind of confusion on rare occasion. In every case, it was that I had two different image files with the same name, in different folders. Poser seems to have some sort of cache lookup that only uses the last part of a files path, the name, instead of the full path, to find an image in its memory. Which one it resolves to when there are duplicates is a tossup.

Next time you post a material problem, please don't waste so much space showing the preview window. I can't read the details in your material, so I don't even know if I'm barking up the wrong tree here.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)