I have a Sony DVD -R (mini) that went blank. I played it a few times with no problem, then gave to play it for some friends and there was nothing on it. What happened?
The problem may be related to the fact that the DVD was scratched somehow during the transportation period. If this is the case, you might need to burn it again with the content. On the other hand, it's possible to actually recover the disc if you insert it into a PC DVD-ROM.