Well, PgcEdit is an IFO editor, and it displays the infos of the IFOs, even if there are no VOBs. You may even use PgcEdit on a backup of the IFOs only! Of course, you will not be able to use the functions requiring the VOBs, like the menu or BOV viewer and editor, and the preview.
I don't want to add a missing VOB error check for all domains. This will make PgcEdit useless when you want to analyse the IFOs posted in a forum, for example. Also, it is relatively obvious to know when a VOB is missing: a title VOB is always required, and a menu VOB is required when there is at least one non-dummy PGC in the domain.
When scanning the VOBs for BOVs, PgcEdit first looks at the subpic definitions. If there are no subpics, there are no BOVs, and the titleset is skipped. When there are subpics defined in the IFOs but no VOBs, the missing VOBs message is displayed.
Anyway, you've found the solution. Simply blank out all PGCs of the domains with missing VOBs.
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