Ok, this is interesting. The first screenshot is from Finder, showing the contents of a Dylan album.
The second screenshot is from the Open function in Mp3tag, selecting the same album
It looks as though Mp3tag just doesn't see the album tracks!
The folder is on an external hard drive, directly connected to the desktop.
Thank you for trying this and sending the screenshots. Looking more closely at the two screenshots, it seems like you have two folders "CD Uploads"
The first occurrence seems to be in the root folder next to the Music folder. The second occurrence seems to be inside the Music folder.
Can you double-check?
Oh that's embarrassing ! Having selected the right one it's now loading all 10k tracks! Apologies for not checking it properly!
Excellent! Glad it's working now 
