I have searched for this 10 different ways, and all I can find are old articles where the fix doesn't apply any longer.
I added 1500 or so movies, and 500 or so tv shows, clicked update and went to bed. Now only a portion of the media files have posters, metatdata etc. I have tried manually refreshing, making sure I have the correct matches, etc, but Plex will not bring in the metadata.
A complete side note, PLEASE PLEASE PLEASE add back the option to have libraries on the dashboard instead of the sidebar. PLEASE!