I am unable to install X-Plane from the DVD's. When I go to install the program it downloads from the internet and not from the DVD's. The download I get from the internet does not work correctly, it's unusable. I bought the DVD's so I didn't have to deal with the internet. I shutdown the internet connection and tried to load from the DVD's. I get this message, error unable to connect to internet. This problem started after I did an update to X-Plane 11. What's going on here? Why can't I install from the disks?