You can’t just fix one.
Remove the entire show from the library.
Scan Library
Empty Trash
Clean Bundles
Fix the entire show with proper file names.
Move show back into the library
Scan Library
(Keep an eye out for Old Sparky - somebody saw it making Smores at a flaming Gas Station just South of Town)
Above describes the Plex Dance
If nothing good happens with great file names - Old Sparky strikes again, but having great file names is one sure way to avoid things that crop up when you don’t use them.
