title: Problems with loading a map with bukkit
body: <p>I am trying to load a map with the bukkit API, and ran into a problem.
  The map does not load. The file gets created and get cappied as well, but when i do /memory in game, it shows all the loaded worlds, and this does not show up. And when i try to teleport to the world by doing <code>p.teleport(world.getSpawnLocation());</code> it just throws a <code>java.lang.NullPointerException: null</code> execption.</p>
  <p>my code:</p>
  <pre><code> public static void loadMap(String l) throws IOException {
          try {
              File folderName = new File(plugin.getDataFolder() + &quot;/maps/Dungeon&quot;);
              File desti = new File(l + &quot;_world&quot;);
              if(!desti.exists()) {
                  desti.mkdir();
              }
              FileUtils.copyDirectory(folderName, desti);
              World world = Bukkit.getServer().createWorld(new WorldCreator(l + &quot;_world&quot;));
              System.out.println(&quot;[DDEBUG]&quot; + world);
          } catch (Exception e) {
              System.out.println(e);
          }
      }
  </code></pre>
  <p>Any ideas on how to fix this ?</p>