MuseScore will not open after most recent update

I was prompted to auto-update MuseScore. After clicking "Install and Relaunch," the app will not open. Instead, I get to the point where it pulls up a list of previous scores and then the app closes before I am able to select anything, then I receive a notice of "The previous session quit unexpectedly. Restore session?" Selecting either option leads to the same crash, same prompt to report the crash to Apple (Text of the box: MuseScore quit unexpectedly. Click Reopen to open the application again. Click report to see more detailed information and send a report to Apple). I need functionality restored; I have deadlines for Monday and I need to be able to open and export parts or I will lose income.