You state you ordered the upgrade, so did you have a previous version of Hoster already on your computer? If yes, and you are upgrading from an older version, do as Jim states, and log in to your account at mtu.com and you should find your reg.code there, it should use the same reg.code as the original Hoster on your computer. If you don't have Hoster already on your computer, then the upgrade will not install, you need to order the full program.
Hope this helps,
Flip
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