2012-10-28 21:34:41 [SEVERE] Could not pass event PlayerInteractEvent to CommandRank v2.4.3
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:341)
	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 org.bukkit.craftbukkit.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:177)
	at net.minecraft.server.ItemInWorldManager.interact(ItemInWorldManager.java:355)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:652)
	at net.minecraft.server.Packet15Place.handle(SourceFile:58)
	at net.minecraft.server.NetworkManager.b(NetworkManager.java:282)
	at net.minecraft.server.NetServerHandler.d(NetServerHandler.java:111)
	at net.minecraft.server.ServerConnection.b(SourceFile:35)
	at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:561)
	at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:213)
	at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:474)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:406)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
Caused by: org.bukkit.command.CommandException: Unhandled exception executing command 'acceptrules' in plugin CommandRank v2.4.3
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:180)
	at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:502)
	at me.black_ixx.commandRank.Listeners.SignListener.onInteract(SignListener.java:40)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:339)
	... 16 more
Caused by: java.lang.NullPointerException: null key
	at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
	at com.google.common.collect.ImmutableMap.entryOf(ImmutableMap.java:139)
	at com.google.common.collect.ImmutableMap.copyOf(ImmutableMap.java:257)
	at org.bukkit.inventory.ItemStack.getEnchantments(ItemStack.java:272)
	at org.bukkit.craftbukkit.inventory.CraftItemStack.<init>(CraftItemStack.java:28)
	at org.bukkit.craftbukkit.inventory.CraftInventory.firstPartial(CraftInventory.java:230)
	at org.bukkit.craftbukkit.inventory.CraftInventory.addItem(CraftInventory.java:256)
	at me.black_ixx.commandRank.Helpers.RankUpOther.GetItems.Get(GetItems.java:75)
	at me.black_ixx.commandRank.Helpers.RankUpOther.RankUpOther.RankUp(RankUpOther.java:32)
	at me.black_ixx.commandRank.commands.Commander.onCommand(Commander.java:48)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
	... 24 more