I use dvd fab platinum to rip dvd's, why won't it rip certain movies????

I can rip anything else I've tried so far...that includes newer movies. The ones I can't rip are "click", "mr. wood", and "hairspray".........does anyone know how to get dvdfab platinum to rip them or is there some kind of special encryption for these three movies that I can't break through???.....please help