19:13:45 [SEVERE] Could not pass event EntityDeathEvent to MonsterDrop v1.4.5
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:427)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:62)
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j
ava:477)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:462)
        at org.bukkit.craftbukkit.v1_4_5.event.CraftEventFactory.callEntityDeath
Event(CraftEventFactory.java:313)
        at net.minecraft.server.v1_4_5.EntityLiving.dropDeathLoot(EntityLiving.j
ava:902)
        at net.minecraft.server.v1_4_5.EntityLiving.die(EntityLiving.java:850)
        at net.minecraft.server.v1_4_5.EntityLiving.damageEntity(EntityLiving.ja
va:730)
        at net.minecraft.server.v1_4_5.EntityMonster.damageEntity(EntityMonster.
java:39)
        at net.minecraft.server.v1_4_5.EntityHuman.attack(EntityHuman.java:794)
        at net.minecraft.server.v1_4_5.EntityPlayer.attack(EntityPlayer.java:164
)
        at net.minecraft.server.v1_4_5.NetServerHandler.a(NetServerHandler.java:
1127)
        at net.minecraft.server.v1_4_5.Packet7UseEntity.handle(SourceFile:36)
        at net.minecraft.server.v1_4_5.NetworkManager.b(NetworkManager.java:290)

        at net.minecraft.server.v1_4_5.NetServerHandler.d(NetServerHandler.java:
113)
        at net.minecraft.server.v1_4_5.ServerConnection.b(SourceFile:39)
        at net.minecraft.server.v1_4_5.DedicatedServerConnection.b(SourceFile:30
)
        at net.minecraft.server.v1_4_5.MinecraftServer.r(MinecraftServer.java:59
7)
        at net.minecraft.server.v1_4_5.DedicatedServer.r(DedicatedServer.java:22
2)
        at net.minecraft.server.v1_4_5.MinecraftServer.q(MinecraftServer.java:49
3)
        at net.minecraft.server.v1_4_5.MinecraftServer.run(MinecraftServer.java:
426)
        at net.minecraft.server.v1_4_5.ThreadServerApplication.run(SourceFile:85
6)
Caused by: java.lang.NullPointerException
        at com.bw2801.plugins.monsterdrop.MonsterHandler.get(MonsterHandler.java
:32)
        at com.bw2801.plugins.monsterdrop.MonsterHandler.getDrops(MonsterHandler
.java:86)
        at com.bw2801.plugins.monsterdrop.Monsterdrop.onEntityDeath(Monsterdrop.
java:56)
        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.ja
va:425)
        ... 21 more