Well, just as a way around it, Poser even needs a .jpg, .bmp, etc., to use to create that .bum file in the first place. In Vue, you can use that same image in the bump editor, and get the same effect. You just have to invert it in Vue, make the Y scale -1 and lower the Gain, but it does work that way. But I know what you mean. When Vue 4 first came out, there were a few people who could use .BUM files, and alot who couldn't. However the 4.05-02 patch has solved that problem, but it seems that only newer .BUM files work. I'm still trying to figure out what the deal is with that.