I looked around for this and can't seem to find anything that has worked yet so I'll post this here. I loaded in a map I have been working on and noticed that certain brushed models went missing. Turned out the textures on them were gone but they were still there. The textures they had where red/blue dev textures. I go looking for them in my texture menu and they weren't anywhere to be found. Everything else was there. I had not changed any settings since the textures last appeared. Any reason they went missing?