Using 5584, downloaded directly from website as internal updater failed to mount as described elsewhere. With a WinXP guest OS which has been working reliably: 1: Started Parallels, selected WXP, and then as soon as I clicked Start to resume the suspended state, Parallels Desktop stopped responding and would not even Force Quit. Same happens when deleted the .mem file to remove suspended state - parallels starts normally then crashes on starting VM. Any ideas!? Cheers...