01:35:07 [SEVERE] Could not pass event EntityDamageEvent to stables v1.4c
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_6_R2.event.CraftEventFactory.callEvent(CraftEventFactory.java:95)
        at org.bukkit.craftbukkit.v1_6_R2.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:399)
        at org.bukkit.craftbukkit.v1_6_R2.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:455)
        at net.minecraft.server.v1_6_R2.EntityLiving.damageEntity(EntityLiving.java:621)
        at net.minecraft.server.v1_6_R2.EntityMonster.damageEntity(EntityMonster.java:39)
        at net.minecraft.server.v1_6_R2.Entity.x(Entity.java:325)
        at net.minecraft.server.v1_6_R2.EntityLiving.x(EntityLiving.java:151)
        at net.minecraft.server.v1_6_R2.EntityInsentient.x(EntityInsentient.java:108)
        at net.minecraft.server.v1_6_R2.Entity.l_(Entity.java:245)
        at net.minecraft.server.v1_6_R2.EntityLiving.l_(EntityLiving.java:1227)
        at net.minecraft.server.v1_6_R2.EntityInsentient.l_(EntityInsentient.java:147)
        at net.minecraft.server.v1_6_R2.EntityMonster.l_(EntityMonster.java:24)
        at net.minecraft.server.v1_6_R2.World.entityJoinedWorld(World.java:1457)
        at net.minecraft.server.v1_6_R2.World.playerJoinedWorld(World.java:1432)
        at net.minecraft.server.v1_6_R2.World.tickEntities(World.java:1304)
        at net.minecraft.server.v1_6_R2.WorldServer.tickEntities(WorldServer.java:517)
        at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:571)
        at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:239)
        at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:481)
        at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:413)
        at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/v1_6_R1/entity/CraftAnimals
        at com.ivalicemud.stables.Stables.onEntityDamage(Stables.java:653)
        at sun.reflect.GeneratedMethodAccessor58.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)
        ... 25 more
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