Copy the Game using DVD Decrypter on your PC..if it gives you errors, then maybe the disc has scratches..what is your DVD-ROM/Writer?
Benq and Samsung can read most CDVD's
If it's a DVD-Rom then better get a dvd writer cause it reads much better the DVD-Rom's
PlayStation 2 V7 FMCB HDD Western Digital 320 GB
PlayStation 3 Slim HDD Western Digital 500 GB 3.55 Kmeaw
PlayStation Portable Slim 6.38 ME 8GB Sandisk
XBOX v1.1 HDD Western Digital 320 GB
XBOX 360 Jasper HDD Western Digital 500 GB Freestyle Dash 2