Error ripping with dvd decryptor

[JAZZEE]

I am trying to rip Only Fools And Horses.I rip all except vob nos 4&5 out of 8.....4 & 5 come up with an error W 15:58:00 Failed to read Sector 1686817 - Illegal Mode For This Track

It plays fine in power dvd so it is not the disc so what may be the problem?

Thanks

[dvd_maniac]

Try using smart ripper and see if that gives you the same results. Also, when I have had trouble ripping a disc and I only want to do a movie only copy, I try stream processing one the video and audio streams I need. Sometimes if there is an error on the disc and I am lucky it is where the other streams are.
Just some advice to a workaround..Good luck.