Hi, I have completly made a map following this tutorial: http://www.youtube.com/watch?v=61200bixU-g
whenever I click single player after running my map from the launcher, it does nothing at all, the game doesn't crash, the map just doesn't start. If I try using the map command I get the following error: https://gyazo.com/1c520d08d0296a0a5447aa08b955e5b0