Error message on ripping

[Mithy]

I've ripped this DVD and made copies for people twice. I put it in today and it gets hung up around 1/2 way through and I get an error message in DVDDecrypter saying it's an L-EC Uncorrectable error on one of the sectors. I was able to bypass this using Ripit4Me and FixVTS...only to come across another area that went through just fine with decrypter. I cleaned the disc and it appears to be fine (it had been suggested that it was either scratced or dirty). So my question is this...is the dvd truly now just something to watch or can I in some way manage to get it ripped to make myself another copy if nothing else?

I've also tried just using Windows Explorer and just copying to my HD like that but get a message that reads "Cannot copy VTS_01_5: Date Error (cyclic redundancy check) " .

Any help/comments appreciated.

[steveryan]

Cyclic redundancy check usually means the disc is knackered, try giving it a good clean.