Wow, thanks for the great response, and quick!!
Maybe I was'nt quite explicit in my problem.
I tried to make another copy of a recent copy, I placed the disk into the drive and it was acknowledged and asked which program I wanted to open the CD?? with, that's right it said CD, I then opened DVD Shrink and it told me there was no DVD loaded, I then tried to play the DVD with Hero and it also said there was no DVD loaded, I then tried it in the DVD Player (normal home type) and it was perfect.
I have also tried some other copies with the same result??.
