Digital Copy supplied with BluRay doesn't download properly...

BluRays such as Sherlock Holmes, Hulk, and Star Trek come with a Digital Copy disc and code. You put the disc in, enter the code at the iTunes Store, and it begins to download. When the download queue shows it is completely downloaded, it just keeps "downloading", even though it's done. Then it either doesn't show in my Movies tab, or worse, doesn't show in my sync tab for movies, which is why I downloaded it in the first place. Any iodeas to solve?