LitePets 1.5.1 Error on Startup

2013-02-11 10:15:05 [SEVERE] Could not pass event EntityDamageEvent to litepets v1.5.1
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.EntityLiving.y(EntityLiving.java:320)
	at net.minecraft.server.v1_4_R1.Entity.j_(Entity.java:241)
	at net.minecraft.server.v1_4_R1.EntityLiving.j_(EntityLiving.java:508)
	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.NullPointerException
	at uk.co.toomuchminecraft.litepets.listeners.EntityCatchListeners.onEntityDamage(EntityCatchListeners.java:42)
	at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
	... 16 more
2013-02-11 10:15:08 [SEVERE] Could not pass event EntityDamageEvent to litepets v1.5.1
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.EntityLiving.a(EntityLiving.java:945)
	at net.minecraft.server.v1_4_R1.Entity.a(Entity.java:778)
	at net.minecraft.server.v1_4_R1.EntityLiving.a(EntityLiving.java:237)
	at net.minecraft.server.v1_4_R1.Entity.move(Entity.java:625)
	at net.minecraft.server.v1_4_R1.EntityLiving.e(EntityLiving.java:1065)
	at net.minecraft.server.v1_4_R1.EntityLiving.c(EntityLiving.java:1306)
	at net.minecraft.server.v1_4_R1.EntityMonster.c(EntityMonster.java:20)
	at net.minecraft.server.v1_4_R1.EntityLiving.j_(EntityLiving.java:534)
	at net.minecraft.server.v1_4_R1.EntityMonster.j_(EntityMonster.java:24)
	at net.minecraft.server.v1_4_R1.EntitySpider.j_(EntitySpider.java:20)
	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.NullPointerException
	at uk.co.toomuchminecraft.litepets.listeners.EntityCatchListeners.onEntityDamage(EntityCatchListeners.java:42)
	at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
	... 23 more