Description: Exception in server tick loop

java.lang.NullPointerException
	at com.bergerkiller.bukkit.common.utils.PacketUtil.callPacketSendEvent(PacketUtil.java:106)
	at com.bergerkiller.bukkit.common.protocol.PacketConnection.sendPacket(PacketConnection.java:432)
	at net.minecraft.server.v1_4_R1.PlayerList.sendAll(PlayerList.java:666)
	at net.minecraft.server.v1_4_R1.PlayerConnection.disconnect(PlayerConnection.java:167)
	at net.minecraft.server.v1_4_R1.ServerConnection.b(SourceFile:46)
	at net.minecraft.server.v1_4_R1.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.v1_4_R1.MinecraftServer.r(MinecraftServer.java:589)
	at net.minecraft.server.v1_4_R1.DedicatedServer.r(DedicatedServer.java:224)
	at net.minecraft.server.v1_4_R1.MinecraftServer.q(MinecraftServer.java:485)
	at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:420)
	at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)