My MacBook Pro had to have an archive reinstallation. Now Parallels no longer works. I reinstalled it as instructed, put in the activation key, and got the following message: "The activation key is valid, but error was occurred while saving license file /Library/Parallels/.parallels_license_2.5. Please make sure you have proper permissions to activate a product!" I am the administrator on the computer so I am not sure what it is referring to. Can anyone provide some suggestions on how I address this issue? Thanks.