ecause DVDshrink is no longer updated, it can't handle the new sony or microvision copy protection being placed on some of the new movie releases, this can cause it to stop encoding or produce an error condition. DVD shrink can't handle this movie alone so.....
To get around this you could try a very good ripper/decrypter called DVDFab decrypter, it'a a whole movie ripper so you'll still need DVDshrink to reauthor the DVD if you want to remove any unwanted extras and shrink the files to fit onto a single layer DVD.Once DVDFab is done ripping, open the files using DVDshrink's open files tab and proceed using DVDshrink as usual.