[21:28:29] [Server thread/ERROR]: Could not pass event EntityDamageByEntityEvent to CombatTag v6.1.1
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:294) ~[craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30) ~[craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at org.bukkit.craftbukkit.v1_7_R2.event.CraftEventFactory.callEvent(CraftEventFactory.java:99) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at org.bukkit.craftbukkit.v1_7_R2.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:403) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at org.bukkit.craftbukkit.v1_7_R2.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:430) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.EntityLiving.damageEntity(EntityLiving.java:663) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.EntityMonster.damageEntity(EntityMonster.java:47) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.EntityArrow.h(EntityArrow.java:231) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.World.entityJoinedWorld(World.java:1486) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.World.playerJoinedWorld(World.java:1462) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.World.tickEntities(World.java:1329) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.WorldServer.tickEntities(WorldServer.java:515) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.MinecraftServer.v(MinecraftServer.java:678) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.DedicatedServer.v(DedicatedServer.java:273) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.MinecraftServer.u(MinecraftServer.java:568) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.MinecraftServer.run(MinecraftServer.java:474) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
	at net.minecraft.server.v1_7_R2.ThreadServerApplication.run(SourceFile:618) [craftbukkit.jar:git-Spigot-1.4.6-R0.3-544-gb2ed321]
Caused by: java.lang.ClassCastException