muw spigot

2013-09-09 19:46:12 [SEVERE] Could not pass event AsyncPlayerChatEvent to myUltraWarps v7.7
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:35)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:478)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:460)
	at net.minecraft.server.v1_6_R2.PlayerConnection.chat(PlayerConnection.java:887)
	at net.minecraft.server.v1_6_R2.PlayerConnection.a(PlayerConnection.java:829)
	at net.minecraft.server.v1_6_R2.Packet3Chat.handle(SourceFile:49)
	at org.spigotmc.netty.NettyNetworkManager$2.run(NettyNetworkManager.java:130)
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalStateException: Asynchronous player tracker clear!
	at net.minecraft.server.v1_6_R2.EntityTrackerEntry.clear(EntityTrackerEntry.java:517)
	at net.minecraft.server.v1_6_R2.EntityTracker.untrackPlayer(EntityTracker.java:196)
	at net.minecraft.server.v1_6_R2.PlayerList.moveToWorld(PlayerList.java:388)
	at org.bukkit.craftbukkit.v1_6_R2.entity.CraftPlayer.teleport(CraftPlayer.java:410)
	at org.bukkit.craftbukkit.v1_6_R2.entity.CraftEntity.teleport(CraftEntity.java:199)
	at REALDrummer.myUltraWarps.performTeleportation(myUltraWarps.java:1757)
	at REALDrummer.myUltraWarps.teleportPartII(myUltraWarps.java:1683)
	at REALDrummer.myUltraWarps.teleport(myUltraWarps.java:1673)
	at REALDrummer.myUltraWarps.readTeleportAcceptancesOrRefusals(myUltraWarps.java:2204)
	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)
	... 14 more