Bukkit

What steps will reproduce the problem?
1. when a entity breaks a block protected by limited creative

What is the expected output? What do you see instead?

the block drop the item

What version of the product are you using?
  2.3beta

Do you have an error log of what happened?

2013-12-18 20:24:39 [SEVERE] Could not pass event EntityExplodeEvent to LimitedCreative v2.2-SNAPSHOT-808b50fb61
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.minecraft.server.v1_6_R3.Explosion.a(Explosion.java:220)
    at net.minecraft.server.v1_6_R3.World.createExplosion(World.java:1771)
    at net.minecraft.server.v1_6_R3.WorldServer.createExplosion(WorldServer.java:850)
    at net.minecraft.server.v1_6_R3.EntityTNTPrimed.explode(EntityTNTPrimed.java:82)
    at net.minecraft.server.v1_6_R3.EntityTNTPrimed.l_(EntityTNTPrimed.java:62)
    at net.minecraft.server.v1_6_R3.World.entityJoinedWorld(World.java:1493)
    at net.minecraft.server.v1_6_R3.World.playerJoinedWorld(World.java:1468)
    at net.minecraft.server.v1_6_R3.World.tickEntities(World.java:1337)
    at net.minecraft.server.v1_6_R3.WorldServer.tickEntities(WorldServer.java:517)
    at net.minecraft.server.v1_6_R3.MinecraftServer.t(MinecraftServer.java:573)
    at net.minecraft.server.v1_6_R3.DedicatedServer.t(DedicatedServer.java:240)
    at net.minecraft.server.v1_6_R3.MinecraftServer.s(MinecraftServer.java:483)
    at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java:415)
    at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:583)
Caused by: java.lang.NullPointerException
    at de.jaschastarke.minecraft.limitedcreative.blockstate.SyncronizedModel.getRestrictedStates(SyncronizedModel.java:64)
    at de.jaschastarke.minecraft.limitedcreative.blockstate.BlockListener.onBlocksBreakByExplosion(BlockListener.java:108)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    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)
Please provide any additional information below.

bukkit version?