I recently tried to install my Justflight Concorde onto a new pc and didn't have any problems before on previous Pc's. The installer failed to initiate, after looking up the problem it is due to a Microsoft update for Vista, Windows 7, 8 and 8.1 has disabled the SECDRV.SYS service used by safedisc-protected disks and so it wouldn't install. Just flight do a nifty little exe file that turns the service on or off in W7/ & W/8 but not in W10 as the service no longer exists. This enabled me to install Concorde from the DVD with no problems, so if you have boxed versions of justflight products and are having this problem download SecDRV tool from
https://www.justflight.com/support/inst ... lp/c8a7570