Yesterday I got a Clip+. I changed the USB mode to MSC and I rockboxed it. I am running Windows 7.
The Clip+ now has the Rockbox firmware on it and is recognized by my computer, but I can not see any files on the Clip+ and it takes up 2 drive letters when I plug it in. If I click either of the 2 drive letters, it says that there are no files.
I searched all over the web for a similar issue, but most of them were that the computer did not recognize the device at all. Mine says driver installed successfully, but I can't access the device.
I have removed the device and other similar devices from the devices and printers section, but it still doesn't fix the problem when I plug the device in again.
Also, if I now run the Rockbox Utility, the drive letters that the device is on, are no longer available.