Everytime I plug in my Pod hd500x, my FS5 button refuses to work. I am unable to change my tone to the channel no matter what I do. I can use the preset dial and select my tone on that button, but if I change to a different tone. That button stops working. I also notice that usually when I plug the pedal in, I always get a message on the screen saying assign footswitch ... When I push a button, I end up messing things up because it reassigns my footswitch. Is this normal or does anyone have any ideas how to fix this?