I seem to have the same problem as another user in that the game just gives me a black screen upon startup. I clicked the screen as you instructed the other user, but the only thing that changed was that a grey arrow appeared, bobbing up and down. Clicking or pressing any buttons doesn't make anything else happen.
I downloaded the free windows version.
Update: I managed to get it going by finiking with the saving and loading system via the right-click menu, but the opening cutscene froze on me about a minute in.