2013-03-24 10:28:51 [SEVERE] Could not pass event InventoryClickEvent to ShelfIt v1.3.1
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
	at net.minecraft.server.v1_5_R2.PlayerConnection.a(PlayerConnection.java:1178)
	at net.minecraft.server.v1_5_R2.Packet102WindowClick.handle(SourceFile:31)
	at net.minecraft.server.v1_5_R2.NetworkManager.b(NetworkManager.java:292)
	at net.minecraft.server.v1_5_R2.PlayerConnection.d(PlayerConnection.java:113)
	at net.minecraft.server.v1_5_R2.ServerConnection.b(SourceFile:35)
	at net.minecraft.server.v1_5_R2.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.v1_5_R2.MinecraftServer.r(MinecraftServer.java:580)
	at net.minecraft.server.v1_5_R2.DedicatedServer.r(DedicatedServer.java:225)
	at net.minecraft.server.v1_5_R2.MinecraftServer.q(MinecraftServer.java:476)
	at net.minecraft.server.v1_5_R2.MinecraftServer.run(MinecraftServer.java:409)
	at net.minecraft.server.v1_5_R2.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 13
	at org.bukkit.craftbukkit.v1_5_R2.inventory.CraftInventoryCustom$MinecraftInventory.getItem(CraftInventoryCustom.java:58)
	at org.bukkit.craftbukkit.v1_5_R2.inventory.CraftInventory.getItem(CraftInventory.java:49)
	at me.AkiraAkiba.shelfit.shelfListener.shelfInteraction(ShelfIt.java:1134)
	at sun.reflect.GeneratedMethodAccessor185.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
	... 14 more