WORLDGUARD-2384 - Reported by Florian.Mornet

Hello ! When a player want to connect to my server, it says that, but WorldGuard regions works !

2012-12-06 22:06:13 [SEVERE] Could not pass event EntityChangeBlockEvent to WorldGuard v738-d016da1 with custom flags plugin.
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.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:456)
at net.minecraft.server.v1_4_5.EntityEnderman.c(EntityEnderman.java:106)
at net.minecraft.server.v1_4_5.EntityLiving.j_(EntityLiving.java:508)
at net.minecraft.server.v1_4_5.EntityMonster.j_(EntityMonster.java:24)
at net.minecraft.server.v1_4_5.World.entityJoinedWorld(World.java:1333)
at net.minecraft.server.v1_4_5.WorldServer.entityJoinedWorld(WorldServer.java:546)
at net.minecraft.server.v1_4_5.World.playerJoinedWorld(World.java:1315)
at net.minecraft.server.v1_4_5.World.tickEntities(World.java:1193)
at net.minecraft.server.v1_4_5.WorldServer.tickEntities(WorldServer.java:444)
at net.minecraft.server.v1_4_5.MinecraftServer.r(MinecraftServer.java:577)
at net.minecraft.server.v1_4_5.DedicatedServer.r(DedicatedServer.java:222)
at net.minecraft.server.v1_4_5.MinecraftServer.q(MinecraftServer.java:493)
at net.minecraft.server.v1_4_5.MinecraftServer.run(MinecraftServer.java:426)
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:750)
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.java:339)
... 18 more
2012-12-06 22:06:14 [SEVERE] Could not pass event EntityChangeBlockEvent to WorldGuard v738-d016da1 with custom flags plugin.
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.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:463)
at net.minecraft.server.v1_4_5.EntityFallingBlock.j_(EntityFallingBlock.java:87)
at net.minecraft.server.v1_4_5.World.entityJoinedWorld(World.java:1333)
at net.minecraft.server.v1_4_5.WorldServer.entityJoinedWorld(WorldServer.java:546)
at net.minecraft.server.v1_4_5.World.playerJoinedWorld(World.java:1315)
at net.minecraft.server.v1_4_5.World.tickEntities(World.java:1193)
at net.minecraft.server.v1_4_5.WorldServer.tickEntities(WorldServer.java:444)
at net.minecraft.server.v1_4_5.MinecraftServer.r(MinecraftServer.java:577)
at net.minecraft.server.v1_4_5.DedicatedServer.r(DedicatedServer.java:222)
at net.minecraft.server.v1_4_5.MinecraftServer.q(MinecraftServer.java:493)
at net.minecraft.server.v1_4_5.MinecraftServer.run(MinecraftServer.java:426)
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:750)
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.java:339)
... 16 more
2012-12-06 22:06:14 [SEVERE] Could not pass event EntityChangeBlockEvent to WorldGuard v738-d016da1 with custom flags plugin.
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.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:463)
at net.minecraft.server.v1_4_5.EntityFallingBlock.j_(EntityFallingBlock.java:103)
at net.minecraft.server.v1_4_5.World.entityJoinedWorld(World.java:1333)
at net.minecraft.server.v1_4_5.WorldServer.entityJoinedWorld(WorldServer.java:546)
at net.minecraft.server.v1_4_5.World.playerJoinedWorld(World.java:1315)
at net.minecraft.server.v1_4_5.World.tickEntities(World.java:1193)
at net.minecraft.server.v1_4_5.WorldServer.tickEntities(WorldServer.java:444)
at net.minecraft.server.v1_4_5.MinecraftServer.r(MinecraftServer.java:577)
at net.minecraft.server.v1_4_5.DedicatedServer.r(DedicatedServer.java:222)
at net.minecraft.server.v1_4_5.MinecraftServer.q(MinecraftServer.java:493)
at net.minecraft.server.v1_4_5.MinecraftServer.run(MinecraftServer.java:426)
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:750)
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.java:339)
... 16 more

I don't know what to do... Can you help me ?