Last October I bought a brand new Mesa/Boogie Mark IV head and I love it. But last friday I had a gig and the footswitch thought it would be fun to stop working at the show. It was working fine an hour before the show because i was warming up and it was fine. No wires were cut and it wasn't mistreated or anything so I dont know what happened? Any ideas on whats wrong with it and how to fix it?

Standard Epiphone LP W/Dimarzio Super 2's
1973 Ampeg VT-22

Fulltone Clyde
Ernie Ball VP Jr
Boss tu-2
Boss sd-1
Ehx Little Big Muff
Fulltone Ultimate Octave
Boss eq-7
Ehx Memory Man
Digitech Delay X-series
Ehx Holy Grail
Gibson Les Paul Studio
Highway One Telecaster
Dean Evo
Mesa F-50
Laney GH50L
Vox AC30 C2
Ampeg V2