I uninstalled, emptied trash, ran AppCleaner, restarted the computer, re-downloaded PanX public beta, installed from scratch, and still got the same error message.
We were able to get PanX to work on the MacOS root user account, but still could not get PanX to work on the normal user account.
Opened the package contents of the Panorama X application and successfully launched Panorama by double clicking on the Panorama X file. This also opened a terminal file.
After four hours of troubleshooting we concluded that the problem has something to do with a corruption in the user account. We created a new user account on the computer, downloaded Panorama X, and successfully launched Panorama.
After another hour of entering passwords and settings, we may be able to go back to work. It will be sometime before everything (pictures, files, emails, etc. sync with the cloud.
Lesson learned. Don’t force quit while Panorama is executing a procedure.