2012-01-16 20:41:54 [SEVERE] Error occurred while enabling WorldEdit v5.1 (Is it up to date?): com.sk89q.worldedit.ServerInterface.onCommandRegistration(Ljava/util/List;)V
java.lang.NoSuchMethodError: com.sk89q.worldedit.ServerInterface.onCommandRegistration(Ljava/util/List;)V
at com.sk89q.worldedit.WorldEdit.(WorldEdit.java:189)
at com.sk89q.worldedit.bukkit.WorldEditPlugin.onEnable(WorldEditPlugin.java:99)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:230)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:989)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:280)
at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:190)
at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:173)
at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:356)
at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:343)
at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:175)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:407)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)