Помогите [1.5.2] Could not pass event PlayerDeathEvent

Версия ядра: Spigot 1.5.2 R11
Установил плагин ZombieOnDeath v2.2. Должен спавнить зомби после смерти игрока - не спавнит. Ошибка:

Код:

Could not pass event PlayerDeathEvent to ZombieOnDeath v2.2
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 org.bukkit.craftbukkit.v1_5_R3.event.CraftEventFactory.callPlayerDeathEvent(CraftEventFactory.java:361)
        at net.minecraft.server.v1_5_R3.EntityPlayer.die(EntityPlayer.java:294)
        at net.minecraft.server.v1_5_R3.EntityLiving.damageEntity(EntityLiving.java:764)
        at net.minecraft.server.v1_5_R3.EntityHuman.damageEntity(EntityHuman.java:684)
        at net.minecraft.server.v1_5_R3.EntityPlayer.damageEntity(EntityPlayer.java:359)
        at net.minecraft.server.v1_5_R3.EntityHuman.attack(EntityHuman.java:874)
        at net.minecraft.server.v1_5_R3.PlayerConnection.a(PlayerConnection.java:1124)
        at net.minecraft.server.v1_5_R3.Packet7UseEntity.handle(SourceFile:36)
        at org.spigotmc.netty.NettyNetworkManager.b(NettyNetworkManager.java:215)
        at net.minecraft.server.v1_5_R3.PlayerConnection.d(PlayerConnection.java:115)
        at net.minecraft.server.v1_5_R3.ServerConnection.b(SourceFile:35)
        at org.spigotmc.MultiplexingServerConnection.b(MultiplexingServerConnection.java:72)
        at net.minecraft.server.v1_5_R3.MinecraftServer.r(MinecraftServer.java:583)
        at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:227)
        at net.minecraft.server.v1_5_R3.MinecraftServer.q(MinecraftServer.java:472)
        at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:404)
        at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.NullPointerException
        at org.bukkit.craftbukkit.v1_5_R3.CraftWorld$1.playEffect(CraftWorld.java:1398)
        at org.bukkit.craftbukkit.v1_5_R3.CraftWorld.playEffect(CraftWorld.java:899)
        at org.bukkit.craftbukkit.v1_5_R3.CraftWorld.playEffect(CraftWorld.java:875)
        at es.diamontcraft._Drezed_.ZombieOnDeath.onPlayerDeath(ZombieOnDeath.java:70)
        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)
        ... 21 more