Ghost 15 with Windows 8.1/10

I'm using Norton Ghost 15 with Windows 7 & everythings works as it should.

I tried to install Norton Ghost 15 on Windows 8.1 Enterprise & now Windows 10 (Technical Preview) but it won't let me register with the serial number that I've previously used with Windows 7.  I had to install Netfix64 in order to complete the installation.  It can't be a compatibility issue because Norton Ghost 15 works in trial mode but this will lapse in 30 days so it's not a long term solution.