I have watched every wah set up video before posting, and I cannot figure out what I am doing wrong. I have an expression pedal (EV-2) with the proper TRS cable from the expression jack on the back to the PDL1 input. I went into setup, toggled over to I/O, set pedal one for expression, and calibrated. I watched the fader move through the calibration process so it is working. I should be good to go. However, everything is still going on. When I double-click on a wah that exists in any of the presets, it will simply not come on. The same thing happens when I attempt to make a preset from scratch. The wah block stays greyed out and will not engage. I am assuming it's something simple - if it's evident to anyone, please point it out - thanks!