Musescore 3 beta bug

Mac OS: sierra 10.12.6
Crashing issue
Disconnected bluetooth headphones, go to change settings. click on 'Musescore' to go to preferences and it crashes
have included pdf of crash report.

Also - minor bug: skipping several bars during playback. can't find any reason, going back and playing it from the spot it skipped and it plays fine.
update:
after several crashes it has reverted to laptop speakers with no loss or corruption of the file