Trouble with Prince of Persia Warrior Within

[Jacod]

I´ve installed a backup copy of this game in 1 DVD, and it doesn´t matter what fixed-exe (POP2.exe) I use it keeps saying the same when I try to execute the game: "Please insert the correct DVD" or "The game must be opened with PrinceOfPersia.exe"

I´ve got the original disc and it works correctly with this installation.

What´s wrong with the backup game?, any idea how to fix it?.

Thanks