I managed to conclude earlier that it was happening when I reached a certain number of image textures. I could swap one out for another, but not add any more. However, it also seemed to happen when I would mix a couple nodes together within a frame. But I’ll try sifting through everything, and see if I can’t find any bad soup ingredients.
Do you know what is happening under the hood that generally cause materials to turn black? The answer is definitely going to be “it depends”, but is there a common occurance?