SEVERE Could not pass event CraftItemEvent to RasBeer v0.4.1

06.05 18:21:50 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
06.05 18:21:50 [Server] INFO at java.lang.reflect.Method.invoke(Unknown Source)
06.05 18:21:50 [Server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
06.05 18:21:50 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
06.05 18:21:50 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
06.05 18:21:50 [Server] INFO at tk.rasmase.beer.CraftListener.onPlayerCraft(CraftListener.java:25)
06.05 18:21:50 [Server] INFO Caused by: java.lang.NullPointerException
06.05 18:21:50 [Server] INFO at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
06.05 18:21:50 [Server] INFO at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:410)
06.05 18:21:50 [Server] INFO at net.minecraft.server.v1_5_R3.MinecraftServer.q(MinecraftServer.java:477)
06.05 18:21:50 [Server] INFO at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:226)
06.05 18:21:50 [Server] INFO at net.minecraft.server.v1_5_R3.MinecraftServer.r(MinecraftServer.java:581)
06.05 18:21:50 [Server] INFO at net.minecraft.server.v1_5_R3.DedicatedServerConnection.b(SourceFile:30)
06.05 18:21:50 [Server] INFO at net.minecraft.server.v1_5_R3.ServerConnection.b(SourceFile:35)
06.05 18:21:50 [Server] INFO at net.minecraft.server.v1_5_R3.PlayerConnection.d(PlayerConnection.java:109)
06.05 18:21:50 [Server] INFO at net.minecraft.server.v1_5_R3.NetworkManager.b(NetworkManager.java:292)
06.05 18:21:50 [Server] INFO at net.minecraft.server.v1_5_R3.Packet102WindowClick.handle(SourceFile:31)
06.05 18:21:50 [Server] INFO at net.minecraft.server.v1_5_R3.PlayerConnection.a(PlayerConnection.java:1172)
06.05 18:21:50 [Server] INFO at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
06.05 18:21:50 [Server] INFO at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
06.05 18:21:50 [Server] INFO at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
06.05 18:21:50 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
06.05 18:21:50 [Server] INFO org.bukkit.event.EventException
06.05 18:21:50 [Server] SEVERE Could not pass event CraftItemEvent to RasBeer v0.4.1