KEPDirect isn't a HOST Engineering product, but I got this from the guys at automationdiersct's tech support:
"the License transfer stuff does not work for our version of the software. All he needs to do is install the software on the other PC, then go to Help-> License a Driver or Plug-in, then type in the registration code he was given 900-20000-XXXX"
hope this helps. if not, the place to go is the automationdirect.com tech guys (or their forum).