During startup on Apple systems if you see an error dialog that lists an initialization error or a class not found, it is best to go clean out the attempted install and start fresh.
To do this, open Finder and in the top menu click Go and select Go to folder from the list. A dialog window will open with a field to type a path into.
and click OK/Open. When the new Finder window opens select the entire contents of the folder and send to Trash.
Download and re-install LOKTAH ROES, then open the application!
It should start correctly. If there is still a failure, please reach out to customer support.