There are over two dozen threads concerning CodeFN42 Midi Utilities in this forum. My system experienced Cantabile exiting crashes when using multiple instances of some plugins (Notemapper, to be specific). Cantabile/CodeFN42 had no issues when running; Cantabile crashed when trying to unload multiple instance of the same CodeFN42 plugin. CodeFN42 was notified of the issue and fixed Notemapper (V1.13) after some trial an error. It appears the owner is updating multiple plugins to fix this issue, so if you’ve had a crashing problem and CodeFN42 was flagged in the Cantabile Error File, update your CodeFN42 plugins.
I seem to find lots of uses for Notemapper and Chordz for midi foot pedals.