2013-03-16 16:42:32 [SEVERE] Error occurred while enabling CNEggRoulette v1.3.1 (Is it up to date?)
java.lang.NoClassDefFoundError: net/minecraft/server/v1_4_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:383)
	at org.bukkit.craftbukkit.v1_5_R1.CraftServer.loadPlugin(CraftServer.java:304)
	at org.bukkit.craftbukkit.v1_5_R1.CraftServer.enablePlugins(CraftServer.java:286)
	at net.minecraft.server.v1_5_R1.MinecraftServer.j(MinecraftServer.java:309)
	at net.minecraft.server.v1_5_R1.MinecraftServer.e(MinecraftServer.java:288)
	at net.minecraft.server.v1_5_R1.MinecraftServer.a(MinecraftServer.java:248)
	at net.minecraft.server.v1_5_R1.DedicatedServer.init(DedicatedServer.java:154)
	at net.minecraft.server.v1_5_R1.MinecraftServer.run(MinecraftServer.java:387)
	at net.minecraft.server.v1_5_R1.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_4_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