I’ve seen lots of problems concerning Playlists, but I couldn’t find my specific problem. So here goes.
I have the Clip+ with 8gb and the latest firmware. I get my music through Rhapsody. I am using W7 64bit. When I create one or more playlists on Rhapsody and then disconnect the Clip+ all the playlists, but one have disappeared. And the one that has remained no longer has the name I gave it, but is back to the generic “New Playlist.” It doesn’t matter if I use USB autodetect or MTP. I also tried using MSC and creating the folders in the playlists, but again it popped back to a single New Playlist.
I have used a fuze and an e280r and even a c200 for years without this type of problem