disablecraft error

This server is running CraftBukkit version git-MCPC-Plus-jenkins-MCPC-Plus-68 (MC: 1.4.7) (Implementing API version 1.4.7-R0.2-SNAPSHOT)


2013-01-30 17:16:03 [SEVERE] Error occurred while enabling disablecraft v1.0.a (Is it up to date?)
java.lang.NoClassDefFoundError: net/minecraft/server/CraftingManager
	at me.tabr.disablecraft.DCMain.onEnable(DCMain.java:266)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:426)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
	at org.bukkit.craftbukkit.v1_4_R1.CraftServer.loadPlugin(CraftServer.java:295)
	at org.bukkit.craftbukkit.v1_4_R1.CraftServer.enablePlugins(CraftServer.java:277)
	at net.minecraft.server.MinecraftServer.j(MinecraftServer.java:534)
	at net.minecraft.server.MinecraftServer.e(MinecraftServer.java:500)
	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:426)
	at ho.c(DedicatedServer.java:195)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:656)
	at fy.run(ThreadMinecraftServer.java:16)
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.CraftingManager
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:179)
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:174)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
	... 12 more