I'm not sure what the crash entails help please.
I was creating a new world when this happened.
Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem; Unexpected error
This error has been saved to D:\Documents\Minecraft\MultiMC\instances\Goldragon 1.3.2 Mods\.minecraft\crash-reports\crash-2012-10-06_22.37.34-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.
--- BEGIN ERROR REPORT 1150471c --------
Generated 10/6/12 10:37 PM
- Minecraft Version: 1.3.2
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_07, Oracle Corporation
- Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 874866512 bytes (834 MB) / 932446208 bytes (889 MB) up to 1908932608 bytes (1820 MB)
- JVM Flags: 2 total; -Xmx2048m -Xms512m
- FML: FML v3.1.35.394 Minecraft Forge 4.2.5.303 Optifine OptiFine_1.3.2_HD_U_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
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
ComputerCraft [ComputerCraft] (ComputerCraft1.43.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
CCTurtle [ComputerCraft Turtles] (ComputerCraft1.43.zip) 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 (1).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
Railcraft [Railcraft] (Railcraft_6.4.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
- LWJGL: 2.4.2
- OpenGL: GeForce GTS 250/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation
- Is Modded: Definitely; 'forge,fml'
- Type: Client
- Texture Pack: Default
- 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 5087a8e8 ----------