Not wanting to start making $4 coasters, I decided to practice making B/U Blu-rays on re-writables. I use AnyDVD HD to rip to my HD and then ImgBurn to the BD-RE's if under 25g or I use BD-Rebuild in the middle if larger than 25g. Entire process is seamless except only 1 out of the 4 (different titles on different BD-RE's) that I have done so far will play on my Magnavox Blu-ray stand alone player. The other three return a message that states that the disk cannot be played. All four BD-RE's play just fine via my Blu-ray burner drive. Any ideas.