Good morning. I'm using Toast 15 Pro and have burned blu-ray BD-R 25 GB disks in the past without problems after importing a 3 hour 59 minutes 51 seconds H.264 file with chapter markers. The blu-ray 25 GB disc allows for 4 hours of HD video. However, when I burn a 3 hour 59 minute 16 seconds BD-R H.264 disc with chapter markers, the disc will not play back on a standard blu-ray player or on a mac platform. Any thoughts guys?