This is really annoying. Not only did I manage to lose a Playlist (blank), now I can't copy the songs back from the device. v4.2 forces you to reformat the device, why on earth is this? Why don't they warn you ahead of time? This has been a recurring problem with this device since day one, I use store purchased CD to create my Library and I still have all sorts of issue moving the songs back and forth. Software complains that it's not the original computer, yet it is? What's up with that?