enclosure wiring problems

[mordechai]

I built a tonebender on a circuit board from Guitar PCB (the "Mojobender" board).  When I hooked up the board to my breadboard, it sounded great, and I've followed the wiring diagram for wiring it into a stompbox.  I

n bypass mode, the signal passes, but when I switch the effect on, there's no signal at all.  I've checked my wiring against the diagram on the Guitar PCB website...below is a link to the diagram (in smaller form) that I posted to Craigslist just so you could see what I was working from.  Any ideas about where I messed up? 

https://post.craigslist.org/manage/2747069288/53khy

[artifus]

check switch wiring again. rotate switch 90 degrees.

[Seven64]

check your grounds.

[mordechai]

I was a short with a loose wire -- fixed, and now sounding great.  Thanks for the suggestions.