we need more information.
what is the title, format, and region of the disc?
what software programs are you using? (besides clonedvd2)
what versions are you using? (exact versions NUMBERS...do not say latest.
i suggest viewing this thread (http://club.cdfreaks.com/showthread.php?t=182650) and then come back here and post the information that we need in order to help you. otherwise our suggestions are merely guesses if you don't tell us anything besides "i got this error. help"