Music Manager(s) cannot find certain album I recently added a new album on my phone and my music manager (neither doubleTwist or the system music app) have indexed it. 

(Failed) Attempts


I have tried deleting the whole album and re-uploading it
I have recently replaced my whole library and while they found every other album, it could not find this one
I have tried the "Reset doubleTwist" button.


Additional Information


The album is located at "HTC One\Internal storage\Music\Slipknot\The Grey Chapter".
It does have every other album in the HTC One\Internal storage\Music\Slipknot\ folder. and every other album I own
I can find it in my phones file manager and from there use it to play the song
It IS in MP3


Does anyone know why this is happening and/or how to fix it?
Try these:


If there is a hidden file named .nomedia in that particular album folder >>> (unhide the file and delete it).
Move the folder into some other directory and refresh library.
Check whether .mp3 files have proper tags (IDv3 tags) >>> (or else they go to unknown album category).