When playing the game in fullscreen, the game may crash or close itself when trying to play the opening and ending videos.
Thus, if videos are not playing properly for you, please try playing in windowed mode (press F4 or Alt+Enter to toggle).

If videos still won't play in windowed mode (or you wish to not have to switch modes), choose to "Skip intro" when prompted, then say "yes" to the second prompt.
This will replace direct playing of videos with a notice telling you to play them manually.