I've tried to order my playlist into folders in the webplayer.
Due to a buggy drag'n'drop functionality the folders don't get displayed anymore and my spotify App on android crash on load.
I'm currently using an Z3c with Android 5.1.1.
Please move all my playlists in the root folder and delete every other folder so that my spotify is workinng again.
It would be helpful if you've an button like 'reset folder structure' like 'recover lost playlists'.