I have been burning disc's with great success over the years until now. I am using all current software and firmware versions. I am and have been using Memorex DL discs. No AnyDVD ro CloneDVD2 problems. If you look at the discs you can see that they burned. In my mid range high end Panasonic Blu-ray player none of the current discs will play. It displays a message that no disc found or cannot play inserted disc. I have a low end(?) Sony BDP-BX1 and half of them will play but takes forever to load. The other half a message displays that cannot play inserted disc or unknown disc. I don't understand what's happening all of a sudden. I have used apprx 2/3 of the blank disc in the stack with no errors. None of the movies are new except Wrath of the Titans and it will not play. Other examples that will not play are The Ten Commandments (2 discs) and Ben Hur (2 discs). John Carter just wouldn't burn at all. 2 discs ruined although it shows in the CSS key archive. So do the others for that matter. .Everything is Region 1 as it should be. All are DVD, not Blu-ray. I use default settings in AnyDVD and CloneDVD2.