Forge Error

---- Minecraft Crash Report ----
// Who set us up the TNT?

Time: 14/11/13 6:49 PM
Description: There was a severe problem during mod loading that has caused the game to fail

cpw.mods.fml.common.LoaderException: java.lang.NoSuchMethodError: net.minecraft.client.Minecraft.func_71380_b()Ljava/io/File;
	at cpw.mods.fml.common.LoadController.transition(LoadController.java:149)
	at cpw.mods.fml.common.Loader.loadMods(Loader.java:521)
	at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:183)
	at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:472)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:807)
	at net.minecraft.client.main.Main.main(SourceFile:101)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
Caused by: java.lang.NoSuchMethodError: net.minecraft.client.Minecraft.func_71380_b()Ljava/io/File;
	at ic2.core.PlatformClient.getMinecraftDir(PlatformClient.java:144)
	at ic2.core.IC2.load(IC2.java:370)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:545)
	at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
	at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
	at com.google.common.eventbus.EventBus.post(EventBus.java:267)
	at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:194)
	at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:174)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
	at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
	at com.google.common.eventbus.EventBus.post(EventBus.java:267)
	at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:105)
	at cpw.mods.fml.common.Loader.loadMods(Loader.java:520)
	... 10 more


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
	Minecraft Version: 1.6.4
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_40, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 51493840 bytes (49 MB) / 202547200 bytes (193 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: FML and Forge are installed
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP v8.11 FML v6.4.20.916 Minecraft Forge 9.11.1.916 13 mods loaded, 13 mods active
	mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized
	FML{6.4.20.916} [Forge Mod Loader] (minecraftforge-9.11.1.916.jar) Unloaded->Constructed->Pre-initialized
	Forge{9.11.1.916} [Minecraft Forge] (minecraftforge-9.11.1.916.jar) Unloaded->Constructed->Pre-initialized
	CodeChickenCore{0.9.0.6} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized
	BuildCraft|Core{4.1.1} [BuildCraft] (buildcraft-A-1.6.2-4.1.1.jar) Unloaded->Constructed->Pre-initialized
	BuildCraft|Builders{4.1.1} [BC Builders] (buildcraft-A-1.6.2-4.1.1.jar) Unloaded->Constructed->Pre-initialized
	BuildCraft|Energy{4.1.1} [BC Energy] (buildcraft-A-1.6.2-4.1.1.jar) Unloaded->Constructed->Pre-initialized
	BuildCraft|Factory{4.1.1} [BC Factory] (buildcraft-A-1.6.2-4.1.1.jar) Unloaded->Constructed->Pre-initialized
	BuildCraft|Transport{4.1.1} [BC Transport] (buildcraft-A-1.6.2-4.1.1.jar) Unloaded->Constructed->Pre-initialized
	BuildCraft|Silicon{4.1.1} [BC Silicon] (buildcraft-A-1.6.2-4.1.1.jar) Unloaded->Constructed->Pre-initialized
	ChickenChunks{1.3.3.3} [ChickenChunks] (ChickenChunks 1.3.3.3.jar) Unloaded->Constructed->Pre-initialized
	IC2{1.117.921} [IndustrialCraft 2] (industrialcraft-2_1.117.921.jar) Unloaded->Constructed->Errored
	Forestry{2.3.0.7} [Forestry for Minecraft] (forestry-A-2.3.0.7.jar) Unloaded->Constructed->Pre-initialized