Can you post the complete output of dvdbackup? E.g. run "dvdbackup -i /dev/sr0 -v -M -n 'stargate-s4d1' > dvdbackup.log" and attach dvdbackup.log to this bug report.
Can you post the complete output of dvdbackup? E.g. run "dvdbackup -i /dev/sr0 -v -M -n 'stargate-s4d1' > dvdbackup.log" and attach dvdbackup.log to this bug report.