All,
I have found that about 70% of my problems with missing posters or incorrect movie identification by the scraper are due to unrecognized or improperly formatted movie names. This is especially true for TV season or other episodic discs which will almost never work with aceptable results for the DMS. This can all be corrected using the tool that Juice discusses above if you have an existing library. For new titles you are adding, try renaming the file or DVD/BD Volume while processing in DVDFab using the naming conventions illustrated above, making sure to add the release year for ambiguous titles like "Robin Hood".
Going forward, we hope to incorporate some Filebot-like features into the DMS Manager (dms.dvdfab.cn) for ease of maintenance. Another change to the scraper logic that will help is that it currently selects by default the oldest movie of an ambiguous title; this will be changed to default to the newest title with the movie name in a future release. There is also some hope for a "DMS Mode" in DVDFab that will automatically address some of this, but there is no current plan or timing for such a feature (just the wish :)). The inclusion of FileBot-like features (plus some improvements) in DMS Manager is much more a real possibility and will be under development soon.
This thread remains open for questions or comments.