Greyed out playlists?

[Gjwireland1]

If I go to a song and select 'add to playlist' some of my playlists are greyed out and it won't let me select them.

What's going on?

It does this on my iPhone.

[Gjwireland1]

In fact I've lost the ability to edit almost all of my playlists, most of which I creates

[Gjwireland1]

In fact I've lost the ability to edit almost all of my playlists, most of which I created