Помогите Essentials

2013-04-22 22:06:07 [SEVERE] Could not pass event InventoryCloseEvent to Essentials v2.10.1
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:363)
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
at qx.x(EntityPlayer.java:1527)
at yc.e(World.java:1946)
at gm.disconnect(ServerConfigurationManager.java:330)
at iv.c(NetServerHandler.java:284)
at iv.a(NetServerHandler.java:1231)
at cu.a(Packet3Chat.java:59)
at cg.b(TcpConnection.java:467)
at iv.d(NetServerHandler.java:220)
at iw.b(NetworkListenThread.java:57)
at ht.b(DedicatedServerListenThread.java:34)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:981)
at ho.r(DedicatedServer.java:309)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:857)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:744)
at fy.run(ThreadMinecraftServer.java:16)
Caused by: java.lang.NullPointerException
at com.earth2me.essentials.EssentialsPlayerListener.onInventoryCloseEvent(Unknown Source)
at sun.reflect.GeneratedMethodAccessor91.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:361)
... 18 more

Что с ним не так?