I have a perpetual license for Norton Ghost 15, which was working fine in Windows 7 Computer. After upgrading to to windows 10, Norton Ghost 15 still works but is asking me to enter my license key. After I enter the key, it says the key is no good and gives me a 30 day trial. I have spend much time over the phone with Symantec and I learned that Ghost is no longer supported. The fact that Symantec no longer supports Ghost does NOT give them the right to revoke the perpetual license they sold me. What can I do have my solve this problem?