I recently purchased a new MacBook Pro and used the Apple Migration Assistant to transfer over my data. I forgot to Sign Out on the old MacBook Air prior to formatting it. Now when I have installed Parallels 11 on the new MacBook Pro and tried to Activate I get the following error message (as per http://kb.parallels.com/123461 ): "This license is already in use. How would you like to activate Parallels Desktop on this Mac?" So I click the 'Activate on This Mac' button as the previous install no longer exists. I then get this error message (as per http://kb.parallels.com/en/115324 ): "Unable to confirm the product license. You have reached the maximum number of activations available..." The trial period will expire in a few days. Any advice for resolution please?