I have reported this bug in previous versions and I am reporting it again for 1.01 because I am not sure if you are aware that it still exists.

When I click to go to a new month, I get the Research Center screen to select a new technology.  When I select the next technology that I want to research, I cannot get out of the Research Center screen.  I believe the issue is caused by another screen that is behind the Research Center screen and is waiting for input.  The reason I believe this is that, after I close the program using the operating system, restart it, and load the last auto-save, I get a screen like the one below before I get the Research Center screen and everything works as expected.

P.S.  I strongly recommend that everybody use the options screen to set the program to auto-save after every turn.  This will minimize the amount of work you will lose when hard crashes or lockups occur.