Invalid Dvd Navigation Structure

[nyjets28]

I used dvd x rescue (a feature of dvd x copy platinum) to backup some of my scratch dvds that is giving crc errors in dvd shrink. the process completed but will not play back i tried to backup the backup using dvd shrink but i'm getting an error message (Invalid Dvd Navigation Structure) does anyone have any answers

[cynthia]

DVDShrink is very hard when your input is not 100% compliant. That's why you got the errors - the structure of the DVD is not ok.

[jeanl]

You can try to load you DVD in PgcEdit (free) and see if it would play in the "Trace" function. PgcEdit's Trace function plays your DVD pretty much like a player would, but you can single-step through the navigation, watching which commands are executed and so on.
This might reveal what the problem is...
Jeanl