False alarm! It's been so long since I've had a Clip that I was confusing the power button and the Home button. D'oh!
I used the Rockbox utility to install on my new Clip+. Now the screen shows the USB plug--it's the screen you get when you plug the Clip+ into a USB port when it's already booted up in Rockbox.
Nothing will change it. Holding down the power button does nothing. Unplugging and replugging into the USB port does nothing. The computer won't recognize the device now, so can't uninstall anything.
Help please!