2013-07-24 13:36:03 [SEVERE] Could not pass event NPCRightClickEvent to dtlTraders v3.0.4 Beta
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:30)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:478)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:463)
	at net.citizensnpcs.EventListen.onPlayerInteractEntity(EventListen.java:261)
	at sun.reflect.GeneratedMethodAccessor495.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:478)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:463)
	at net.minecraft.server.v1_6_R2.PlayerConnection.a(PlayerConnection.java:1114)
	at net.minecraft.server.v1_6_R2.Packet7UseEntity.handle(SourceFile:36)
	at org.spigotmc.netty.NettyNetworkManager.b(NettyNetworkManager.java:230)
	at net.minecraft.server.v1_6_R2.PlayerConnection.e(PlayerConnection.java:118)
	at net.minecraft.server.v1_6_R2.ServerConnection.b(SourceFile:37)
	at org.spigotmc.netty.NettyServerConnection.b(NettyServerConnection.java:125)
	at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:592)
	at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:239)
	at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:481)
	at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:413)
	at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: java.lang.NullPointerException: null key
	at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
	at com.google.common.collect.ImmutableMap.entryOf(ImmutableMap.java:139)
	at com.google.common.collect.ImmutableMap$Builder.put(ImmutableMap.java:178)
	at org.bukkit.craftbukkit.v1_6_R2.inventory.CraftItemStack.getEnchantments(CraftItemStack.java:277)
	at org.bukkit.craftbukkit.v1_6_R2.inventory.CraftItemStack.getEnchantments(CraftItemStack.java:262)
	at net.dandielo.citizens.traders_v3.utils.items.attributes.Enchant.onFactorize(Enchant.java:79)
	at net.dandielo.citizens.traders_v3.traders.stock.StockItem.factorize(StockItem.java:212)
	at net.dandielo.citizens.traders_v3.utils.ItemUtils.createStockItem(ItemUtils.java:23)
	at net.dandielo.citizens.traders_v3.traders.Trader.selectAndCheckItem(Trader.java:751)
	at net.dandielo.citizens.traders_v3.traders.Trader.updatePlayerInventory(Trader.java:318)
	at net.dandielo.citizens.traders_v3.traders.types.Server.onRightClick(Server.java:106)
	at net.dandielo.citizens.traders_v3.tNpcListener.npcRightClickEvent(tNpcListener.java:281)
	at sun.reflect.GeneratedMethodAccessor530.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
	... 24 more