Please Help with Burning DVD-A


Well, this is my first dvd-a burn for a client releasing his album on this format.
I read TFM and followed it, but still the disks I burn out of WL won’t play in either the system or any of the dvd players in the place.
However, there is a file set on there and I can open the big .AOB file that is the WL Montage of the album and play it via VLC or such. Just that none of the players recognize it as a valid disc. I can see some sort of song-list menu flash on the screen for a split second, but then it fails.

Is there something I should know about burning these things, that maybe the manual isn’t explicit enough about?
Or something?