Incomplete Rip of a Movie

[DVD Clueless]

Am a newbie and tried to make a backup of Training Day . Smartripper did the job but the rip is incomplete, maybe the last 12 minutes missing. What can be done about it?
m2v file 3.23 G.
ac3. file 335 MB
Sys W98SE
smartRipper
Spruce up and REMpeg2
Thanks