From time to time Metronome Pro crashes. This is the error message:

The first few times this occurred I solved the problem by reinstalling Metronome Pro.
Now I found a workaround. I save a copy of MetronomePro.mpro to replace the orginal file when the error occurs.
As far as I can see my version ( of Metronome Pro is up to date.
BIAB 2019
Finale 26, Reason 10, Komplete 11, Roland OctaCapture, Edirol PCR-300, Guitars