Ha! Go figure. Now it quits!

When it did happen I did not see any error messages. I would ctrl+Q or used Quit from the pull down menu and nothing would happen. On a Mac you can Force Quit apps that have stalled. In this window MOI was not showing red (stalled apps would show up as red).

Anyway, just launched and quit MOI several times now and it's fine. Go figure!

-Alan