A couple of bugs were found crawling around in the floor of the boats and have been exterminated.
Main fixes of interest:
-The simulator was crashing on startup for a very small percentage of people running Windows 10 - 64. This has been fixed, so if you couldn't run it before, try it again now.
-The buttons in the ESC menu when driving the tunnelboat often didn't work at the end of a run, especially if the ESC key was pressed while the boat was rotating or accelerating quickly. This too has been fixed.
-The tunnel boat's windshield mesh in the design screen had some gaps between it and the driver's cell. This has been fixed too.