Hi @mturk,
It is possible that a cryosparc process was orphaned unintentionally before updating, causing the update process to fail. Expanding on what @donaldb said, make sure cryosparc is stopped (cryosparcm stop) and then run ps -ax | grep "supervisord" to find the PID’s of cryoSPARC 2 processes which you can then kill. You might also need to delete this file: unix:///tmp/cryosparc-supervisor-6539593591723470764.sock
In terms of mongo, check the process log/mongo log mentioned for possibly more details in how to revive it. If you’re able to salvage the database, you can reinstall the cryosparc master and your instance should be fine.
Please let me know what happens.