Music not syncing between desktop and iPhone

[yadis]

I've synced music before and have used Spotify for many years. It has never been any problems. But now I'm trying to sync files from my Mac desktop client (1.0.28.87) to my iPhone client (5.5.0). I add the local files by choosing source for the files, and they appear in the "local files" playlist on my computer. I then proceed to check the "offfline"-option, and I get the green arrow by the name of the playlist in the margin, but there's no obvious signs on "downloading" or any other actions, and if I leave it nothing happens. The songs doesn't sync to the phone. Why doesn't it work, and what can I do to make it work again?

[yadis]

This is still an issue. Can someone help me?

[1229283807]

Same problem. 

My playlists are available offline on my Mac but since I have updated the 5.5.0 app on my iphone, they don't synchronize on my phone... they don't even appear. 

I re-installed the app... nothing changed.

Everything is like usual and checked on my Mac. I don't know how to fix this !