Ive bee through all the guides, ive used dvd shrink to copy dvds that are to large to copy in nero, and everything seems fine. The dvds compress fine, copy fine, but dont work at all, in my pc or any dvd player. I put it in my dvd player in my pc and it just says the disk is invalid or corrupted and cant be read and its just spins. Im using a Emprex dvd dual 16x double layer dvd copier. Anyone got any ideas? help greatly appreciated..could it be the disk's im using? using: Mr. DVD (DVD+R) 4.7gb.