[MAC] serial number is not unique

On OSX 10.5, 10.6, 10.7,10.8

Go to this folder :

HD/Library/Application Support / Synchrosoft Soft-eLicenser/

Move the file to trash:

SeLicenser.sel

Then reinstall your eLicenser Control center from the latest update:

==> http://www.elicenser.net/en/latest_downloads.html