2013-07-23 01:06:18 [SEVERE] Error occurred while enabling TerrainControl v2.4.14 (Is it up to date?)
java.lang.NoClassDefFoundError: net/minecraft/server/v1_6_R2/World
at com.khorn.terraincontrol.bukkit.commands.TCCommandExecutor.RegisterCommands(TCCommandExecutor.java:54)
at com.khorn.terraincontrol.bukkit.commands.TCCommandExecutor.(TCCommandExecutor.java:23)
at com.khorn.terraincontrol.bukkit.TCPlugin.onEnable(TCPlugin.java:83)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:396)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:383)
at org.bukkit.craftbukkit.v1_6_R2.CraftServer.loadPlugin(CraftServer.java:312)
at org.bukkit.craftbukkit.v1_6_R2.CraftServer.enablePlugins(CraftServer.java:294)
at org.bukkit.craftbukkit.v1_6_R2.CraftServer.(CraftServer.java:244)
at net.minecraft.server.management.ServerConfigurationManager.(ServerConfigurationManager.java:130)
at net.minecraft.server.dedicated.DedicatedPlayerList.(DedicatedPlayerList.java:19)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:156)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:601)
at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_6_R2.World
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:340)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:332)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 14 more

Your craftbukkit version ?

this is not error) i put this on plugin folder, while using forge