First put original disc into a drive and start nero toolkit/nero info tool. Click on disc and write down all the info. You should have parallel track, ISO 9660, Joliet, UDF file system. Now put burn disc and see what it says there. Maybe the file system is different. Also try to see if you can copy disc using ISO image. If you can somehow get a program to copy ISO file, like DVD decrypter use that instead, much easier. You can also download IMAGE BURN for free and use that to burn the disc as well. I would also suggest to use Verbatim DL disc.