I'm playing through the tutorial for XCOM.
I've just told the Research Labs to build the alien zapper, and it tells me to "go to mission control".
However, I keep clicking on the button and nothing happens. I've tried reloading the game; but it just doesn't seem to respond to any input (though sound, etc. plays fine).
I just keep pressing that "Mission Control" button, but it doesn't do anything and I can't go "back" to the main view.
What can I do?