Just a quick tip to help anyone with this issue. I hope it saves you at least a few minutes of frustration…

I found that when midi items are included in a Folder, and you attempt to use Pro-C on the Parent Track (in this example, attempting to add Compressor the the ‘Instruments’ Track) …

Pro-C would act more like a limiter – at least, the ‘Gain Change’ meter would not move – and the compressor just flat-lines.

This is due to Midi being enabled.


To disable, click on the  ‘Midi Learn’ drop-down,  in the bottom-left corner and deselect ‘Enable MIDI.

Note: Sometimes the ‘Enable MIDI’ option appears to reactivate itself – and will need to be turned off manually again, so perhaps this is a glitch in Pro-C and Reaper compatibility.

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