I have Windows 98SE running on build 1970 without issue. The install will boot and run in Parallels beta also but hangs on shutdown. It seems the entire shutdown is complete but I am presented with a black "DOS" screen with the DOS cursor (underline) froze near the middle of the screen. A reboot brings up the windows disk scan utility. By accident, I dumped the screen buffer and could tell that there was a "blue screen" type crash dialog in the middle of the screen but, maybe, it was presented as black letters on a black background rendering it unreadable. In summary: an otherwise good installation of Windows 98SE crashes consistantly in the beta builds upon exit, leaving only a black screen.