I am fairly early in a new game (month 65) using the most recent test version of 1.05.  I clicked on the icon to go to the next month and my screen went black.  I could still move the cursor around and I could still hear the music playing so I know the game was still running, but the screen was black and I could not do anything. The Esc key dinged the first time I pressed it, but no menu appeared and repeatedly pressing it did not do anything.  I had to go to the operating system and close the game process.

I loaded the most recent autosave (I have it set to save after every month) and it did not happen again so I am not including a link for the devs to look at.  I know you cannot do anything constructive with this information, but I think you need to be aware that this occurred in case you get similar reports of players getting black screens.