Sorry, late to the party here.
I did just download the "Two Sleepy People.MGU" file and didn't get a crash here on v.182 when muting tracks.
I did notice though that the tempo when I opened it was 90 bpm, and not 80bpm, but it does display both digits here.
I am running 10.11.6 though, not sure if that makes a difference.
- Jay
Thanks Jay.
It was the Nuages file that triggered the crashes, and that's now solved with 182.
Two Sleepy People was sent to me by a friend, who sets the target tempo for performance on the lead sheet (80 bpm), but may use BIAB for practice at a different tempo (90 bpm in this case).
This fault may be OSX version-related, too. Icelander reports no crashes on muting instruments with Nuages loaded with an earlier-than-Sierra version.