Midish crashing regularly (SysEx overload?)

Hey hey,
I noticed that the latest version of Midish (git) is crashing regularly. I 
wonder if there is an overrun of some kind.

The project has one track, which is purely used to route channels. I use it 
for sound design, in performance (i) mode, the synth in question produces 
SysEx for every knob.

The message before crashing is:
prompt> i
pool_new(sysex): pool is empty
prompt> Aborted (core dumped)
I used Midish/rmidish for the same purpose with the same synthesizer in 
previous versions and this didn't happen.

If there's any more help that I can give, please let me know.

Best wishes,

Jeanette

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