Bukkit

What is the issue?

Please provide any additional information below.

Getting this Error... can't see what i'v done wrong.. but i'd really like it to work ó.ò

05:31:02 [SEVERE] Error occurred while enabling ChunkEnforcer v1.0 (Is it up to
date?)
java.lang.NoSuchMethodError: de.doridian.chunkenforcer.ChunkEnforcer.getConfigur
ation()Lorg/bukkit/util/config/Configuration;
        at de.doridian.chunkenforcer.ChunkEnforcerListener.reload(ChunkEnforcerL
istener.java:40)
        at de.doridian.chunkenforcer.ChunkEnforcerListener.<init>(ChunkEnforcerL
istener.java:29)
        at de.doridian.chunkenforcer.ChunkEnforcer.onEnable(ChunkEnforcer.java:2
3)
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:215)
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader
.java:336)
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManage
r.java:381)
        at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:250)
        at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:232
)
        at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:371)
        at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:358)
        at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:187)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:422)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)