That a weird error code as it's not even listed.
I wonder what a 502 error actually relates to?
Looks to me like it might be an encoder error and these usually result from a bad rip.
That DVD has been out for a long time now and DVDFab shouldn't have any difficulty processing it so it looks to me like it might be a dirty or damaged disc.
Standalone players are much more tolerant of errors and it's common for discs to be playable despite being unable to rip them.
I'd suggest following SJ's advice and see if you can clean the disc as even fingerprints can cause problems if they're in the wrong place.
If it's scratched though you might have to resort to more severe methods.