Hey, have been using a line 6 GX interface for the best part of 8 months. Plugged in this morning to find theres no input signal or output signal, just a repetitive clicking sound. I restarted my computer several times, reinstalled the drivers, tried different usb ports, everything. No change. Also doesn't allow playback of sound via iTunes or my DAW when it's connected either. This has been an incredibly frustrating process. I don't understand how something like this can stop working overnight without any prompting.