I have a similar problem. This used to work but not any more.
Used to burn Verbatim DVD+R discs on a LiteOn DVD-RW drive using DVD Shrink or Nero. Never had a problem for about 2 years. Now every time I play the disc in a normal DVD player it won't recognise the disc and ejects it again.
First I though burner was the problem. Tried a new firmware and it didn't work. Then bought 5 different brands of discs and one DVD-R type and they all did the same thing. Bought a new LiteOn DVD-RW drive and the problem still remained. Took the drive back to the store and tried an LG DVD burner and same result. In the end tried Roxio, ImgBurn and CloneDVD and these too produced the same result.
I know the discs work fine because I can read them perfectly in both of my computer DVD-RW and my laptop DVD-ROM drive however 2... now 3 different DVD players don't read them of which I own. Then tried again in next door's DVD player and it too won't read.
I am clueless as to what the problem is and all I can think of is there being some hidden settings somewhere in Windows that can stop this from working?
Upgraded Fireware - FAILED
2 new DVD-RW Drives - FAILED
Different burning software - FAILED
Different disc brands and types - FAILED
Different DVD players even a new one - FAILED
What left is there to try?
Thanks in advance.