Reader DC hangs instead of saving

I am on Windows 10. I recently updated my build version. Perhaps that is the cause of this problem.

When I got Reader DC, it worked fine. But I have not needed it for over a month. Today when I did use it, any attempt to save a document resulted in a window popping up but remaining blank and never going away. Print still works. Not sure what the next move is or should be. Let me know. Thanks.