Har, har, har,......Yeah I've gotten these a couple of times, don't know exactly what they mean, I've only seen these when the file size gets large(over 200mb's) and I'm using photo textures. I save the file and then close Bryce, then reload and the problem is usually gone. I've never had it happen twice in a row.

"Any club that would have me as a member is probably not worth joining" -Groucho Marx