I need help..

[WARLOCK01]

Can anyone help me on this one?
i have just burned a game..(Fifa 2000) I started with copying all the files from my cd rom (With the game Cd inside) to a temp dir..then i switched the originally fifa2000.exe with a "CD Copy exe" from gamecopyworld...i also changed two other files who was included in the zip file from gamecopyworld..Then i burned the game with Nero from the temp dir..everything works perfect until the actually football game is about to start..then the game is being shut down and i get the error message: "Abort Message" "STREAM - invalid chunk (1e 5f d5 c8 11 c8 d1 e0)" Does any of you know what i did wrong? and what to do to fix it? What do you guys do when you are copying games? (in the way i just explained?)PLEASE help me on this one...Thanx..