MGMError1.4

2012-10-28 16:40:43 [SEVERE] Could not pass event PlayerInteractEvent to Minigames v1.3.1
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:361)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:650)
	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.r(MinecraftServer.java:569)
	at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:215)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:486)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:419)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:818)
Caused by: java.lang.NullPointerException
	at org.bukkit.craftbukkit.inventory.CraftItemStack.<init>(CraftItemStack.java:27)
	at org.bukkit.craftbukkit.inventory.CraftInventory.firstPartial(CraftInventory.java:230)
	at org.bukkit.craftbukkit.inventory.CraftInventory.addItem(CraftInventory.java:256)
	at com.pauldavdesign.mineauz.minigames.MPMinigame.quitMinigame(MPMinigame.java:157)
	at com.pauldavdesign.mineauz.minigames.PlayerData.quitMinigame(PlayerData.java:270)
	at com.pauldavdesign.mineauz.minigames.Events.onSignUse(Events.java:301)
	at sun.reflect.GeneratedMethodAccessor120.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:339)
	... 16 more