I just got a 4k friendly burner. I made a backup of my 4k Starship Troopers disc. It ripped to an iso fine. It burned fine. I can play it on my PC with VLC fine. But I put the disc in my LG UBK90, it tries reading it for a minute, then ejects the disc. Is there something different with burning 4k vs. standard BD? Are some players not capable of playing BD-XLs? If that's the case, is there a list of players that do?