PlayMovie 1.5 will not play my latest Blu-ray disc, what's going on?

Due to the nature of Blu-ray technology's utilization of various video and audio formats, some newer BD disks may not play back through PlayMovie 1.5. Regular updates are made available through PlayMovie 1.5's internal update feature. If you encounter a lack of ability to playback a BD movie, be sure to check for an update to PlayMovie 1.5.