trouble creating playlists in win 7 that work on clip

I have the original Clip. In win7 32 bit I can create a playlist in WMP and save it to the root of the SansaClip directory; all songs refer to files on the Clip. I can even play using that list from the Clip on my computer. As soon as I disconnect, the Clip updates, the playlist is there but it is empty. When I reconnect it, it’s functional on the computer. If I do the same thing in XP, everything works. Any idea what I can do to save rebooting into XP?