2013-02-14 15:38:23 [WARNING] Could not properly handle event PLAYER_CHANGED_WORLD:
java.lang.IllegalAccessError: Synchronized code got accessed from another thread: java.util.concurrent.ThreadPoolExecutor$Worker
	at org.bukkit.event.NLTCListener.onPlayerChangedWorld(NLTCListener:0)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:479)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:464)
	at net.minecraft.server.v1_4_R1.PlayerList.moveToWorld(PlayerList.java:418)
	at org.bukkit.craftbukkit.v1_4_R1.entity.CraftPlayer.teleport(CraftPlayer.java:400)
	at org.bukkit.craftbukkit.v1_4_R1.entity.CraftEntity.teleport(CraftEntity.java:189)
	at uk.org.whoami.authme.Utils$1.run(Utils.java:172)
	at org.bukkit.craftbukkit.v1_4_R1.scheduler.CraftTask.run(CraftTask.java:53)
	at org.bukkit.craftbukkit.v1_4_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
2013-02-14 15:38:23 [INFO] This error is logged only once: it could have occurred multiple times by now.
2013-02-14 15:38:23 [INFO] Potential failures may occur in other plugins handling this Event.
2013-02-14 15:38:23 [INFO] Please contact one of the authors of plugin 'AuthMe': darkwarriros,Xephi