Can you please try the suggestion referenced here, specifically:
Delete the following from your OS.
On Vista, Windows 7, or Windows 8:
On Windows XP:
C:\Documents and Settings\All Users\Application Data\FLEXnet\adskflex_*.data
C:\Documents and Settings\All Users\Application Data\FLEXnet\adskflex_*.data.backup
As this will require a reactivation, please either send me a Private Message (click on my philip.s profile name and then "Send this user a private message") with your serial number + request code or contact our License Assistance Team if necessary.
Please accept as a solution if this fully resolves the issue, or reply with additional specifics if the problem persists.