Upgrade Problem

[Perplexed]

The original computer I installed Hoster on crashed some time ago. Since then I have done 3 upgrades with no problems, and I can revert to an older version and it works fine. I read in the upgrade info that Hoster now uses a different form of identifying your computer. This software was purchased with the credit card of a friend, not by me. So the registration is in his name while the computer and windows is registered to me. Would this have something to do with the error I am getting? If MTU is reading the registry before installing, it is my thought that this could be causing my problem. Your help is appreciated.