Server Crash error

Code:

[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: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 org.bukkit.craftbukkit.v1_4_6.event.CraftEventFactory.callEntityChangeBlockEvent(CraftEventFactory.java:457)
    at org.bukkit.craftbukkit.v1_4_6.event.CraftEventFactory.callEntityChangeBlockEvent(CraftEventFactory.java:445)
    at net.minecraft.server.v1_4_6.EntityEnderman.c(EntityEnderman.java:106)
    at net.minecraft.server.v1_4_6.EntityLiving.j_(EntityLiving.java:523)
    at net.minecraft.server.v1_4_6.EntityMonster.j_(EntityMonster.java:24)
    at net.minecraft.server.v1_4_6.World.entityJoinedWorld(World.java:1334)
    at net.minecraft.server.v1_4_6.WorldServer.entityJoinedWorld(WorldServer.java:546)
    at net.minecraft.server.v1_4_6.World.playerJoinedWorld(World.java:1315)
    at net.minecraft.server.v1_4_6.World.tickEntities(World.java:1193)
    at net.minecraft.server.v1_4_6.WorldServer.tickEntities(WorldServer.java:443)
    at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:580)
    at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
    at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:494)
    at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:427)
    at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
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.GeneratedMethodAccessor139.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)
    ... 18 more
2013-01-01 17:30:08 [INFO] CONSOLE: Forcing save..
2013-01-01 17:30:08 [INFO] CONSOLE: Save complete.
2013-01-01 17:30:08 [INFO] CONSOLE: Stopping the server..
2013-01-01 17:30:08 [INFO] Stopping server

Plugin List:
TimTheEnchanter
WorldBorder
ColourMotd
GroupManager
nChat
WorldEdit
NoCheatPlus
BukkitCompat
TagAPI
NameTags
mcjobs
Vault
CombatTag
MobBountyReloaded
WorldGuard
PvPTimer
TopPVP
CoreProtect
permissions
WhatIsIt
ScheduledAnnouncer2
AntiAdvertiser
Votifier
FoundDiamonds
MobHealth
Essentials
Citizens
MobCatcher
EssentailsProtect
EssentialsSpawn
EssentialsAntiBuild
VotifierScripts
EssentialsChat
Factions

 

A few people are having this problem, I myself did, it is WorldGuard. Try updating it but if the error still occurs just remove it

 

The reason is because the new versions of Bukkit are not supporting the same methods as the older ones (as in either deprecated or obliterated). You need to update to the latest version of WorldEdit and WorldGuard. They are available on a link to the DEV versions for the two plugins. They are not available on dev.bukkit.org, and you will need to go to sk89q's website.