Could not pass event PlayerDropItemEvent to LWC v4.4.0 (b873-git-MANUAL) (June 22, 2013)
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:46)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:478)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:463)
	at net.minecraft.server.v1_6_R1.EntityHuman.a(EntityHuman.java:524)
	at net.minecraft.server.v1_6_R1.EntityHuman.drop(EntityHuman.java:484)
	at net.minecraft.server.v1_6_R1.Container.clickItem(Container.java:224)
	at net.minecraft.server.v1_6_R1.PlayerConnection.a(PlayerConnection.java:1417)
	at net.minecraft.server.v1_6_R1.Packet102WindowClick.handle(SourceFile:31)
	at org.spigotmc.netty.NettyNetworkManager.b(NettyNetworkManager.java:237)
	at net.minecraft.server.v1_6_R1.PlayerConnection.d(PlayerConnection.java:118)
	at net.minecraft.server.v1_6_R1.ServerConnection.b(SourceFile:37)
	at org.spigotmc.netty.NettyServerConnection.b(NettyServerConnection.java:125)
	at net.minecraft.server.v1_6_R1.MinecraftServer.t(MinecraftServer.java:592)
	at net.minecraft.server.v1_6_R1.DedicatedServer.t(DedicatedServer.java:235)
	at net.minecraft.server.v1_6_R1.MinecraftServer.s(MinecraftServer.java:481)
	at net.minecraft.server.v1_6_R1.MinecraftServer.run(MinecraftServer.java:413)
	at net.minecraft.server.v1_6_R1.ThreadServerApplication.run(SourceFile:582)
Caused by: com.griefcraft.scripting.ModuleException: LWC Module threw an uncaught exception! LWC version: 4.4.0 (b873)
	at com.griefcraft.scripting.ModuleLoader.dispatchEvent(ModuleLoader.java:358)
	at com.griefcraft.listeners.LWCPlayerListener.onPlayerDropItem(LWCPlayerListener.java:142)
	at sun.reflect.GeneratedMethodAccessor207.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
	... 18 more
Caused by: java.lang.NoClassDefFoundError: com/garbagemule/MobArena/MobArena
	at com.griefcraft.modules.modes.DropTransferModule.onDropItem(DropTransferModule.java:123)
	at com.griefcraft.scripting.ModuleLoader.dispatchEvent(ModuleLoader.java:342)
	... 23 more