Every time I try to update Parallels in my guest OS, Windows XP, it freezes. I have been trying for at least a month now. What can I do to fix this? I am following the prompts that come up when Windows finishes loading. I have also tried a manual update. Either way my guest OS freezes. I have to do a force quit every time to get out of the system. Then I have to start all over again only to have the same thing happen. Please help!