this happened to me too. To fix it, it's easy. First, press the "Multiplayer" Button, click on whatever you want (official or community, doesn't matter.) After that, if you actually want to play multiplayer, wait it to load. But, if you want to play singleplayer, wait for it to load into multiplayer, and then press the "return" button and go to single-player. Select what map you want and done!
