Ask your buddy to give you his copy of the older version of
CloneDVD and retest. That said, I've successfully backed up Troy and many +120 min movies with CloneDVD 2.5.4.3.
i would also try DVD Decrypter to rip the VIDEO_TS folder to your HD, then use CloneDVD to remaster and burn the data to the DVD(s). If DVD Decrypter has problem ripping, then you may have an issue with the original DVD disc or the DVD reader.