I couldn't find the thread on the turn button going awol (or MIA) so I decided to start a new thread.
This is with the Beta 3a build (ver 0.31). After I pressed the turn button ships on auto pilot moved, then the game just seemed to stop. The planet list was up at the time and nothing in it changed. Ships that had moved had 0 moves left. The turn button was gone and did not re-appear. I tried lots of the tricks we had used on Beta 1 and 2 when this happened on those builds but nothing seemed to work. So I saved the game, shut down GC2, restarted and reloaded. That is when I discovered that there were three ships on manual with moves left.
I thought there was an option to "skip moves left at end of turn", but I can't find it. I would have it turned off if it were there. I thought there was a similar option in GC1 and the previous betas for GC2.
In any case, the appearance is that ships on manual with moves left caused "end of turn" to lock up the game.