Either stalls asking for controller to be plugged in or crashes on startup

Basically, if sc-desktop.py is started, scosk.py will crash on startup with the following error message:

"LIBUSB_ERROR_BUSY"

If sc-desktop.py is not started, then it stalls with a message telling me it is waiting for a controller to be plugged in.

Maybe I'm doing someting wrong?  I'm running this on a Pine64 board with an A64 quad core processor.
