WORLDGUARD-2397 - Reported by D3C0D3R

Plugin error as follows:
2012-12-09 16:44:16 [SEVERE] Could not pass event EntityChangeBlockEvent to WorldGuard v5.6.5
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:341)
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:35)
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
at org.bukkit.craftbukkit.v1_4_5.event.CraftEventFactory.callEntityChangeBlockEvent(CraftEventFactory.java:468)
at org.bukkit.craftbukkit.v1_4_5.event.CraftEventFactory.callEntityChangeBlockEvent(CraftEventFactory.java:452)
at net.minecraft.server.v1_4_5.PathfinderGoalEatTile.e(PathfinderGoalEatTile.java:67)
at net.minecraft.server.v1_4_5.PathfinderGoalSelector.a(PathfinderGoalSelector.java:104)
at net.minecraft.server.v1_4_5.EntityLiving.bl(EntityLiving.java:1431)
at net.minecraft.server.v1_4_5.EntitySheep.bl(EntitySheep.java:44)
at net.minecraft.server.v1_4_5.EntityLiving.c(EntityLiving.java:1233)
at net.minecraft.server.v1_4_5.EntityAgeable.c(EntityAgeable.java:68)
at net.minecraft.server.v1_4_5.EntityAnimal.c(SourceFile:33)
at net.minecraft.server.v1_4_5.EntitySheep.c(EntitySheep.java:52)
at net.minecraft.server.v1_4_5.EntityLiving.j_(EntityLiving.java:508)
at net.minecraft.server.v1_4_5.World.tickEntity(World.java:1459)
at net.minecraft.server.v1_4_5.World.entityJoinedWorld(World.java:1421)
at net.minecraft.server.v1_4_5.WorldServer.entityJoinedWorld(WorldServer.java:570)
at net.minecraft.server.v1_4_5.World.playerJoinedWorld(World.java:1411)
at net.minecraft.server.v1_4_5.World.tickEntities(World.java:1289)
at net.minecraft.server.v1_4_5.WorldServer.tickEntities(WorldServer.java:464)
at net.minecraft.server.v1_4_5.MinecraftServer.r(MinecraftServer.java:564)
at net.minecraft.server.v1_4_5.DedicatedServer.r(DedicatedServer.java:222)
at net.minecraft.server.v1_4_5.MinecraftServer.q(MinecraftServer.java:478)
at net.minecraft.server.v1_4_5.MinecraftServer.run(MinecraftServer.java:413)
at net.minecraft.server.v1_4_5.ThreadServerApplication.run(SourceFile:856)
Caused by: java.lang.NoSuchMethodError: org.bukkit.event.entity.EntityChangeBlockEvent.getEntity()Lorg/bukkit/entity/LivingEntity;
at com.sk89q.worldguard.bukkit.WorldGuardEntityListener.onEndermanPickup(WorldGuardEntityListener.java:733)
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:601)
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:339)
... 26 more

And this repeats until the server is turned off, the actual server is online though