I bought a Sansa Fuze+ (8GB) a few months ago, along with a 16GB memory card… Back then when I plugged it into my computer the two storages showed up in Explorer (I have Windows 7, by the way), and everything was fine. But now when I plug it in, only Internal Storage shows up!
Incidentally, all the music on the card can still be played without any problems on the player, I just can’t access it on the computer.
I’ve already tried unplugging it and plugging it in again, and I’ve updated the firmware to the newest version. Didn’t help.