DVD+R backup won't autoplay in Sony Deck

[Gurm]

Ok, here's a puzzler for you.

I've made dozens of backups, and without fail they all work over at my friend's house (the kids go there to be babysat, and often my DVD's go with them) in his Sony deck. It's a picky deck, I'm aware of that - there are originals that no longer play. But overall, every single time my DVD+R copies have worked... even when they've been transcoded.

This brings me to my latest backup. It's a new-ish "Thomas the Tank Engine" DVD... "Percy's Chocolate Crunch" if you care about the title.

Anyway, rather than backing it up with DVD Decrypter, which I should have done, I was foolish and dragged the files off the drive and then burned them back with Recordnow - something I've done DOZENS of times before.

Only THIS time, the DVD malfunctions on the Sony deck. It won't autoplay (have to select chapter 1 to get it to go) and it won't automatically go from chapter to chapter... you have to hit "chapter up" to get it to go.

I thought for sure "Oh, Recordnow was set for UDF 1.50 and the Sony wants UDF 1.02". But lo and behold the disc HAS UDF 1.02 on it.

Now, I _could_ just make a new backup of the original. But my curiosity has been piqued - what has gone wrong here and how can I fix it? I've got the VIDEO_TS folder back on the desktop, deprotected (courtesy of AnyDVD). This time I want to do it right... ideas?

- Gurm

[Gurm]

Bump?