I am a newbie at backing up dvds and just recently Ive tried DVDx 1.3 and now after ripping using clad or smartripper when I try to select the vob ifo file and click open a error message comes up " Auth.dll. Cant authenticate drive . disk may be not locked " when i click ok a second error comessaying "MPEG2Dec error during decoder initialisation " these errors comes up regardless whichever dvd I try.Any help would be greatly appreciated , thanks .