Used anydvd to rip disk to hard drive. When i then converted the movie to mkv file all with no problems. But when you play the movie, at about 41 min into the movie a black screen appears and says Copy detected (or a rip tool is running if you are trying to watch this movie on your pc). it also from this point has thrown the movie out of sequence. Any ideas or is this just one of those movies that can not be backed up and used.