Hi I used an old backup for my new mac that contained an old version of parallels. I have since purchased a new version, activated it and registered it. However, after using it for some time the old activation key code appears and asks me to re-register it. I have to reenter the new key again. I tried using the uninstaller that comes with the package to get rid of the old key but still have the same problem. How do I get rid of the old registration key
