I have the Asus TP500L laptop with no CD drive. So i bought an external CD drive which is bue-ray compatible with the intention of playing blue ray movies (it is USB 3.0). I can easily play normal DVD's through the external drive but whenever i put a blue ray movie in and play it through a blue ray player it just states "invalid blue ray file". It does it with every blue ray disc - new ones, old ones, regular ones, 3D ones. I have downloaded multiple software and all do the same - AnyMP$, VLC, Macgo, Aiseesoft. Am I missing something? Is there something else I need to download? Thankyou!!!