Ya that's the problem with Stienberg, and the e licencer software is a PITA,, I lived with it for a few years and then bought the dongle.
I upgrade my systems and hard drives at least once a year and it meant e mailing Stienberg , explaining why you needed a new serail number etc... then the stupid e licencer would still not work!! I hated it.. But the dongle has made it so I never have to talk or beg them again..
If you want to pull your hair out even more, try posting on the Stienberg user forum. Example, we can only post on the LE forum. Problem is all the people who actually are active are on the the full version Cubase forum where you can't ask questions. So your cut off from any real help. A question asked on the lesser forums will get one reply ,,, a week later at best... I gave up and it's one reason I stick with Sonar... this forum is here to answer issues, and usually within an hour if not a minute..