Nolagg TNT error

2013-02-19 19:55:20 [SEVERE] Could not pass event ExplosionPrimeEvent to NoLagg v1.89.5
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_4_R1.EntityTNTPrimed.explode(EntityTNTPrimed.java:77)
	at net.minecraft.server.v1_4_R1.EntityTNTPrimed.j_(EntityTNTPrimed.java:61)
	at net.minecraft.server.v1_4_R1.World.entityJoinedWorld(World.java:1332)
	at net.minecraft.server.v1_4_R1.WorldServer.entityJoinedWorld(WorldServer.java:548)
	at net.minecraft.server.v1_4_R1.World.playerJoinedWorld(World.java:1313)
	at net.minecraft.server.v1_4_R1.World.tickEntities(World.java:1191)
	at net.minecraft.server.v1_4_R1.WorldServer.tickEntities(WorldServer.java:445)
	at net.minecraft.server.v1_4_R1.MinecraftServer.r(MinecraftServer.java:580)
	at net.minecraft.server.v1_4_R1.DedicatedServer.r(DedicatedServer.java:224)
	at net.minecraft.server.v1_4_R1.MinecraftServer.q(MinecraftServer.java:494)
	at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:427)
	at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.NoSuchMethodError: net.minecraft.server.v1_4_R1.Entity.getBukkitEntity()Lorg/bukkit/entity/Entity;
	at com.bergerkiller.bukkit.nolagg.tnt.CustomExplosion.doBlocks(CustomExplosion.java:337)
	at com.bergerkiller.bukkit.nolagg.tnt.CustomExplosion.doAll(CustomExplosion.java:61)
	at com.bergerkiller.bukkit.nolagg.tnt.NLTListener.onExplosionPrime(NLTListener.java:23)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.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)
	... 15 more