strikelet

So recently my POD X3 Live has done something wierd ... When I use any tones there is no sound. I have to go into 'System', change the pedal control from '1:W/V 2:VOL' to another and back. Then the sound works. I can save this tone to the pedal and all is well. Annoying but can be worked around. However, all the tones built into the user library are the same. And these are not always as easy to change as they stay the same in the library and everytime I need to use this method to get the sound working again. Any ideas why this might be? Any fixes? Thanks