So these are all in same folder? Knots doesn't allow to add same paths twice meaning if you add /Some/Folder you can't add /Some/Folder/Inside because it already gets scanned. But this scenario triggers a bug and I need to fix it. But you can probably get around it for now if you rename the Alison Kraus folder to "Alison Kraus_" for example or add the parent folder of these three. Thanks for noticing this.