[MC]Plugin Probleme

[12:07:25 INFO]: [AuthMe] Enabling AuthMe v2.5
>
[12:07:25 ERROR]: Error occurred while enabling AuthMe v2.5 (Is it up to date?)
java.lang.NoClassDefFoundError: org/bukkit/util/config/Configuration
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.6.0_31]
at java.lang.ClassLoader.defineClass(ClassLoader.java: 643) ~[?:1.6.0_31]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.6.0_31]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:277) ~[?:1.6.0_31]
at java.net.URLClassLoader.access$000(URLClassLoader.java:73) ~[?:1.6.0_31]
at java.net.URLClassLoader$1.run(URLClassLoader.java:212) ~[?:1.6.0_31]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.6.0_31]
at java.net.URLClassLoader.findClass(URLClassLoader.java:205) ~[?:1.6.0_31]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.plugin.java.JavaPluginLoader.getClassByName(JavaPluginLoader.java:217) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:73) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java2) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at java.lang.ClassLoader.loadClass(ClassLoader.java:323) ~[?:1.6.0_31]
at java.lang.ClassLoader.loadClass(ClassLoader.java:26 ~[?:1.6.0_31]
at uk.org.whoami.authme.AuthMe.onEnable(AuthMe.java0) ~[?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:250) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:350) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:389) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugin(CraftServer.java:439) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.craftbukkit.v1_7_R1.CraftServer.enablePlugins(CraftServer.java:375) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.craftbukkit.v1_7_R1.CraftServer.reload(CraftServer.java:773) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.Bukkit.reload(Bukkit.java:279) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:23) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:175) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java83) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at net.minecraft.server.v1_7_R1.PlayerConnection.handleCommand(PlayerConnection.java:952) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:814) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at net.minecraft.server.v1_7_R1.PacketPlayInChat.a(PacketPlayInChat.java:28 ) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at net.minecraft.server.v1_7_R1.PacketPlayInChat.handle(PacketPlayInChat.java:47) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:146) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java: 655) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile: 617) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
Caused by: java.lang.ClassNotFoundException: org.bukkit.util.config.Configuration
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java67) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java62) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks]
at java.lang.ClassLoader.loadClass(ClassLoader.java:323) ~[?:1.6.0_31]
at java.lang.ClassLoader.loadClass(ClassLoader.java:268 ) ~[?:1.6.0_31]
... 36 more

Hallo,
Ich habe folgendes Problem mit dem Plugin Authme. Wenn ich den Server starte kommt folgender Error:

Ich hoffe mir könnte jemand helfen.....
MFG Lukas