Praetorians Question...odd it is

i have made a backup of Praetorians; nevertheless, i have found it odd that the backup’s autoplay and the game itself will only work in my Liteon DvD drive and Plex 24x cdrw drive…

however, the autoplay feature will not pop up on my samsung 52x cdrom and Plex 8x cdrw also these drives keep reading the backup and cannot acquire a correct TOC to show that iam able to see the contents when i try to access the drive through MY COMPUTER…

any hints??

How did you copy it?