Installed first time to the desktop as instruction to do so. Then let it update. Put in disk #1 to start game, however , not responding. Removed all files and reinstalled to a different drive. Got same results. Went on to your site and downloaded the file for windows. Then proceded to reinstall to other drive. Started with disk # 1 but it to was non responsive. None of the previous ? have my problem. As Pilot Shop will not refund my $ I am trying to get to work,however, as I used my PayPal account I will put in a request to them for a refund if you cannot fix this.