Please check that your audio hardware is functioning correctly and that Preferences -> Playback -> "Sound Device" has been correctly configured.

[IanJ]

Help!!!  over an hour i have wasted with this pedal!!!  why won't it work on my mac????  Please check that your audio hardware is functioning correctly and that Preferences -> Playback -> "Sound Device" has been correctly configured.????

[gsp_runner]

Is your foot pedal detected when you try to set up? Try the steps here: https://www.nch.com.au/kb/10225.html

"Please check that your audio hardware is functioning correctly and that Preferences -> Playback -> "Sound Device" has been correctly configured.????" - this is an error for no sound issue, not related to foot pedal.