Hmm, that is quite odd have you tried using powerdvd ever? There trial comes with blu ray support. Sometimes blu ray movies come with a little extra encryption with the star wars blu rays for example it would ask me to update my player shrugs and after updating it worked just fine.
I really don't know man! I love! powerdvd for video playback on the computer I feel like you get the best blu ray experience with them flat out!
So it seems like its just a compatibility thing with your player. However, that being said I think its a good thing it was somewhat resolved.