AnCasino Error

2011-12-24 09:28:00 [SEVERE] Could not pass event PLAYER_INTERACT to AnCasino
java.lang.NullPointerException
	at me.darazo.ancasino.AnCasinoPlayerListener.onPlayerInteract(AnCasinoPlayerListener.java:153)
	at org.bukkit.plugin.java.JavaPluginLoader$11.execute(JavaPluginLoader.java:335)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:58)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:339)
	at org.bukkit.craftbukkit.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:178)
	at net.minecraft.server.ItemInWorldManager.interact(ItemInWorldManager.java:266)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:593)
	at net.minecraft.server.Packet15Place.a(SourceFile:39)
	at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:93)
	at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java:550)
	at net.minecraft.server.NetworkListenThread.a(SourceFile:108)
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:527)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)