If I put the BD-R discs in the Sony BDP-S590 blu-ray player, the Home menu for the player pops up, states that it's a "BD-R BDMV", but when I select the option to play the disc, it just goes back to the blu-ray player's menu. It won't actually play the disc. It gives no error message. I contacted Sony via chat on their website, and they didn't seem to know much. If I put the same disc into the Panasonic DMP-BD30 player, it plays the disc, but I only hear the audio. The screen is black. However, if I try to fast forward, I get a half second glimpse of the video that I'm supposed to be seeing. 3 discs--same thing. However, I have a handful of other BD-R discs that play fine. The firmware is up to date on both players. I don't have a PC to put the discs in to test. Does anyone know what would be causing this? I would think that if the discs were bad, then I wouldn't see the video when I fast forward????