So far those are the only ones to work.
As soon as I receive orders and start the mission, choose where the boat starts; in port or out in the ocean, the bar shows loading mission progress and then a dark screen with a message; "No mission too difficult", or something to that effect. Then I hear voices of the crew announcing visual contacts of certain ships in the harbor. Then the boxed message and voices start to shake and vibrate. Then it hangs. I "window key" out of there to the desktop.
Beats me.