I went into the map editor, to look at the newly available themes in some test maps (since there's no preview available with the dropdowns). I created a small map, with the Founders theme for the Empire, and it was created immediately. However, now, every time I open the map editor to create a map, I click the create map button, the "creating map window comes up, and nothing happens. Task Manager does not show the game as not responding, but it just hangs until I use task manager to manually close the game. I tried just loading a map I've been working on, and it comes up normally.