Here is the answer from your Support Ticket.
You can install MTU programs on 2 computers, except Hoster Lite which installs on 1. You are only installed on one.
Just reformatting your computer hard drive should allow installing any of our programs on that same computer without needing a reset. Our security is tolerant of this often done computer fix.
You should upgrade to Hoster Lite 3.318 at:
http://www.mtu.com/upgrades/hoster.htm
You should upgrade to Keyrite 2.012 at:
http://www.mtu.com/upgrades/keyrite.htm
You should upgrade to KHPro 4.107 at:
http://www.mtu.com/upgrades/khpro.htm