"Playlist can't be added to your iCloud Music Library". Why?
Solution 1:
"Playlists that reference other Playlists can not be uploaded"
It took me awhile to figure out the solution to this problem, but I eventually did. You can no longer just drag and drop songs from Apple Playlists to new ones that you create yourself, but you are still able to do it a different way. You also used to be able to just right-click on a song, a menu would pop up, and you could then "add to selected playlist" - this no longer works either.
Solution: if you go into any one of your Apple Music playlists, hover over any one of the songs, you will notice a little icon with 3 dots show up - if you LEFT-click on this, a menu will pop up (different than the old menu), and then add the song to your desired new self-made playlist. This seems to work.
The problem is that iTunes still has both the old method and the new method active, but only the new method actually works.
Solution 2:
This is what finally worked for me.
- Create a new playlist, and copy all songs from the problem playlist
- In playlist, remove all downloads. I did this by highlighting all songs, clicking on ..., and selecting 'remove download'.
- This make the download from iCloud icon appear next to all the songs
- Then I had to go through and click each song to get it to redownload from iCloud. About 10% of my songs would not download from iCloud.
- I moved the 10% of bad songs to a temporary playlist and deleted them from the new playlist. The new playlist would now sync to iCloud.
- I then dragged and dropped each song, 1 by 1, from the temp playlist back into my new playlist. It wouldn't work if a dragged more than 1 at a time.
- After doing that, my new playlist synced to iCloud and all my devices.
Solution 3:
I saw this error when I added songs directly from the "For You" or "New" tabs in iTunes to a playlist.
To fix the error for my playlist I manually added the songs to My Library, then added them to a playlist. I was then able to sync that playlist.
Solution 4:
iCloud recently has had updates done which you check the system status at here
I had issues with creating new playlists from my phone. When I signed out and signed back into my iCloud account, this functionality came back.
I am not sure if this will resolve your issue but could be an unseen issue as to why this may have happened.
Solution 5:
I found that I had some video files in my playlist that wouldn't sync/upload. These files has an icon next to them that identified them as non-uploadable. I deleted these from my playlist and booyaa!