I tried the Win98 compatibility and got the error: Unsupported driver call, check driver version. P5 crashes a lot in the Material Room for me. I can have one figure, or a bunch of figures. It doesn't matter. It seems to be pretty consistant when it crashes - when I try to copy the material settings / node settings from one material to all materials in a figure. It doesn't need to be a large polygon figure, either. I'll try updating the video drivers, but I don't see how that will help in this case. P4, 1.7Ghz, 512Mb RAM, XP Pro.