error

[21:01:22] [Server thread/ERROR]: Could not pass event EntityDamageByEntityEvent to ItemLoreStats v4.82
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:338) ~[JavaPluginLoader$1.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[RegisteredListener.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:507) [SimplePluginManager.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:492) [SimplePluginManager.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.callEvent(CraftEventFactory.java:102) [CraftEventFactory.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:595) [CraftEventFactory.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:463) [CraftEventFactory.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.handleLivingEntityDamageEvent(CraftEventFactory.java:627) [CraftEventFactory.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at net.minecraft.entity.EntityLivingBase.damageEntity_CB(EntityLivingBase.java:1362) [sv.class:?]
	at net.minecraft.entity.player.EntityPlayer.damageEntity_CB(EntityPlayer.java:1228) [yz.class:?]
	at net.minecraft.entity.EntityLivingBase.func_70097_a(EntityLivingBase.java:901) [sv.class:?]
	at net.minecraft.entity.player.EntityPlayer.func_70097_a(EntityPlayer.java:1144) [yz.class:?]
	at net.minecraft.entity.player.EntityPlayerMP.func_70097_a(EntityPlayerMP.java:646) [mw.class:?]
	at net.minecraft.entity.player.EntityPlayer.func_71059_n(EntityPlayer.java:1388) [yz.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_147340_a(NetHandlerPlayServer.java:1589) [nh.class:?]
	at net.minecraft.network.play.client.C02PacketUseEntity.func_148833_a(SourceFile:55) [ja.class:?]
	at net.minecraft.network.play.client.C02PacketUseEntity.func_148833_a(SourceFile:10) [ja.class:?]
	at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:244) [ej.class:?]
	at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:173) [nc.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:980) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:423) [lt.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:798) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:658) [MinecraftServer.class:?]
	at java.lang.Thread.run(Unknown Source) [?:1.7.0_71]
Caused by: java.lang.IncompatibleClassChangeError: Found interface com.sk89q.worldguard.protection.ApplicableRegionSet, but class was expected
	at com.github.supavitax.itemlorestats.Util.Util_WorldGuard.playerInPVPRegion(Util_WorldGuard.java:21) ~[?:?]
	at com.github.supavitax.itemlorestats.Damage.DamageSystem.onEntityDamage(DamageSystem.java:312) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_71]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_71]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_71]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_71]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:334) ~[JavaPluginLoader$1.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	... 23 more