I'm trying to load Zonealarm Seciruty Suite onto a new Win 7 computer - I have a license for 3 machines & have only installed the software onto 2 machines so far. I have cut and paste the license key from my original order email but the system keeps on rejecting this as incorrect.

Does anyone have any suggestions? I'm probably doing something stupid but I have never had this sort of problem when loading ZA in the past.