CloneDVD won't do it by itself if the DVD is copy protected. If ROTK is copy protected then you will need the a software driver such as AnyDVD which will allow CloneDVD to get over the copy protection and do its thing. If you can't afford AnyDVD, then try DVD Shrink which should do it for free. Hope this helps.
Has this movie been released yet? All my searches indicate a release date of May 25th. Please read the forum rules.