gameshark cdx copy wont work

ok i have a burnt copy of gameshark cdx for dreamcast and a burnt copy of many games. for some reason though my gameshark wont work with burnt dc games, does anyone else have this problem? what can i do, i wanna cheat at lodoss war but i dont wanna buy the game.

[Unspoiled_Puma]

i have burned the gameshark CDX and it work great with all my backups(self bootable, i dont know with the other).... sorry i dont have this problem try to burn it an other time ...