Bukkit

What steps will reproduce the problem?
1. Install craftbukkit 1.5.1 build2700

Do you have an error log of what happened?
2013-03-22 09:09:45 [INFO] [CNEggRoulette] Enabling CNEggRoulette v1.3.2
2013-03-22 09:09:45 [SEVERE] Error occurred while enabling CNEggRoulette v1.3.2 (Is it up to date?)
java.lang.NoClassDefFoundError: net/minecraft/server/v1_5_R1/EntityTypes
    at me.derflash.plugins.eggroulette.CNEggRoulette.onEnable(CNEggRoulette.java:88)
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
    at org.bukkit.craftbukkit.v1_5_R2.CraftServer.loadPlugin(CraftServer.java:282)
    at org.bukkit.craftbukkit.v1_5_R2.CraftServer.enablePlugins(CraftServer.java:264)
    at net.minecraft.server.v1_5_R2.MinecraftServer.j(MinecraftServer.java:303)
    at net.minecraft.server.v1_5_R2.MinecraftServer.e(MinecraftServer.java:282)
    at net.minecraft.server.v1_5_R2.MinecraftServer.a(MinecraftServer.java:242)
    at net.minecraft.server.v1_5_R2.DedicatedServer.init(DedicatedServer.java:150)
    at net.minecraft.server.v1_5_R2.MinecraftServer.run(MinecraftServer.java:381)
    at net.minecraft.server.v1_5_R2.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_5_R1.EntityTypes
    at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:70)
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 12 more

Please provide any additional information below.

The config.yml is not created by start the the server.