The PPP can read .bum files like the previous versions. It shouldn't lock up because you use a .bum file. You can convert a .bum file easily enough though. 1.)change the .bum file extension to .bmp 2.)open it in any paint program and convert it to grey scale. 3.)save it as a .bmp or .jpg if you want to reduce the file size. Then apply it in the material editor in the PPP. What figure's are locking up Poser? I'll download one of them if they are available for free. And see if it locks up for me. ScottA