Got a shortboard for christmas. USB cable to computer and line 6 monkey says I don't need any updates. Plug it into line 6 jam amp with the cable supplied. I can calibrate it. Unplugged it, plugged it back in and nothing. None of the switches work. It shows its name in the display, nothing changes that. Could it be a faulty cable or the shortboard itself or is there something else I am supposed to do? I need some help.