Server.log

[SEVERE] [DisguiseCraft] Unhandled exception occured in onPacketReceiving(PacketEvent) for DisguiseCraft
java.lang.RuntimeException: Cannot retrieve entity from ID.
	at com.comphenix.protocol.wrappers.BukkitConverters$7.getSpecificValue(BukkitConverters.java:404)
	at com.comphenix.protocol.wrappers.BukkitConverters$7.getSpecificValue(BukkitConverters.java:383)
	at com.comphenix.protocol.wrappers.BukkitConverters$IgnoreNullConverter.getSpecific(BukkitConverters.java:101)
	at com.comphenix.protocol.reflect.StructureModifier.read(StructureModifier.java:201)
	at pgDev.bukkit.DisguiseCraft.listeners.DCPacketListener$1.onPacketReceiving(DCPacketListener.java:40)
	at com.comphenix.protocol.injector.SortedPacketListenerList.invokePacketRecieving(SortedPacketListenerList.java:54)
	at com.comphenix.protocol.injector.PacketFilterManager.handlePacket(PacketFilterManager.java:546)
	at com.comphenix.protocol.injector.PacketFilterManager.invokePacketRecieving(PacketFilterManager.java:512)
	at com.comphenix.protocol.injector.spigot.SpigotPacketInjector.packetReceived(SpigotPacketInjector.java:457)
	at com.comphenix.protocol.injector.spigot.SpigotPacketInjector.packetReceived(SpigotPacketInjector.java:400)
	at com.comphenix.protocol.injector.spigot.SpigotPacketInjector$1.intercept(SpigotPacketInjector.java:199)
	at org.spigotmc.netty.PacketListener$$EnhancerByCGLIB$$4da874b3.packetReceived(<generated>)
	at org.spigotmc.netty.PacketListener.callReceived(PacketListener.java:58)
	at org.spigotmc.netty.NettyNetworkManager.b(NettyNetworkManager.java:227)
	at net.minecraft.server.v1_6_R2.PlayerConnection.e(PlayerConnection.java:116)
	at net.minecraft.server.v1_6_R2.ServerConnection.b(SourceFile:37)
	at org.spigotmc.netty.NettyServerConnection.b(NettyServerConnection.java:125)
	at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:592)
	at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:239)
	at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:481)
	at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:413)
	at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: com.comphenix.protocol.reflect.FieldAccessException: Cannot find entity from ID 3601.
	at com.comphenix.protocol.injector.EntityUtilities.getEntityFromID(EntityUtilities.java:240)
	at com.comphenix.protocol.injector.PacketFilterManager.getEntityFromID(PacketFilterManager.java:747)
	at com.comphenix.protocol.wrappers.BukkitConverters$7.getSpecificValue(BukkitConverters.java:398)
	... 21 more
Caused by: java.lang.IllegalStateException: Unable to find appropriate GET_METHOD for IntHashMap.
	at com.comphenix.protocol.wrappers.WrappedIntHashMap.initializeGetMethod(WrappedIntHashMap.java:165)
	at com.comphenix.protocol.wrappers.WrappedIntHashMap.get(WrappedIntHashMap.java:91)
	at com.comphenix.protocol.injector.EntityUtilities.getEntityTrackerEntry(EntityUtilities.java:205)
	at com.comphenix.protocol.injector.EntityUtilities.getEntityFromID(EntityUtilities.java:215)
	... 23 more
2013-09-01 09:51:21 [SEVERE] Parameters:
  net.minecraft.server.v1_6_R2.Packet7UseEntity@984554[
    a=3598
    target=3601
    action=0
    m=<null>
    timestamp=1378021881778
    lowPriority=false
    packetID=7
  ]