forge crash

 Minecraft has crashed!
      ----------------------

Minecraft has stopped running because it encountered a problem; Unexpected error
This error has been saved to C:\Users\JadedCay\Desktop\Multimc\instances\Forgefun\.minecraft\crash-reports\crash-2012-10-12_14.18.01-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.



--- BEGIN ERROR REPORT d775e462 --------
Generated 10/12/12 2:18 PM

- Minecraft Version: 1.3.2
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_06, Oracle Corporation
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 560726912 bytes (534 MB) / 614989824 bytes (586 MB) up to 954466304 bytes (910 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- FML: FML v3.1.35.394 Minecraft Forge 4.2.5.303 Optifine OptiFine_1.3.2_HD_B3 16 mods loaded, 16 mods active
	FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	mod_CodeChickenCore [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	mod_NotEnoughItems [Not Enough Items] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	Mystcraft [Mystcraft] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	BuildCraft|Core [BuildCraft] (buildcraft-A-3.2.0pre7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	BuildCraft|Builders [BC Builders] (buildcraft-A-3.2.0pre7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	BuildCraft|Energy [BC Energy] (buildcraft-A-3.2.0pre7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	BuildCraft|Factory [BC Factory] (buildcraft-A-3.2.0pre7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	BuildCraft|Transport [BC Transport] (buildcraft-A-3.2.0pre7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	BuildCraft|Silicon [BC Silicon] (buildcraft-A-3.2.0pre7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	Forestry [Forestry for Minecraft] (forestry-A-1.5.0.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	IC2 [IndustrialCraft 2] (industrialcraft-2_1.106.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	mod_InvTweaks [Inventory Tweaks] (InvTweaks-1.43b-1.3.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	CompactSolars [Compact Solar Arrays] (mod_compactsolars-main-3.0.1.13.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	IronChest [Iron Chest] (mod_ironchests-client-4.0.3.46.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
- LWJGL: 2.4.2
- OpenGL: AMD Radeon HD 6800 Series GL version 4.2.11762 Compatibility Profile Context, ATI Technologies Inc.
- Is Modded: Definitely; 'forge,fml'
- Type: Client
- Texture Pack: BTWfantasyjc (2).zip
- Profiler Position: N/A (disabled)

java.lang.NoSuchMethodError: net.minecraftforge.common.DimensionManager.saveDimensionDataMap()Lan;
	at net.minecraftforge.common.ForgeDummyContainer.getDataForWriting(ForgeDummyContainer.java:66)
	at cpw.mods.fml.common.FMLCommonHandler.handleWorldDataSave(FMLCommonHandler.java:409)
	at aeb.a(SaveHandler.java:215)
	at net.minecraft.client.Minecraft.a(Minecraft.java:1843)
	at aoo.a(GuiCreateWorld.java:266)
	at apn.a(SourceFile:64)
	at aoo.a(GuiCreateWorld.java:405)
	at apn.d(SourceFile:112)
	at apn.m(SourceFile:100)
	at net.minecraft.client.Minecraft.l(Minecraft.java:1495)
	at net.minecraft.client.Minecraft.J(Minecraft.java:845)
	at net.minecraft.client.Minecraft.run(Minecraft.java:775)
	at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT fb75214e ----------