After Repeating the instillation of thaumcraft 3.0.0g, I still get the message:
Forge Mod Loader has found a problem with your minecraft installation
The mods and versions listed below could not be found
Forge : [6.4.1.407,)
The file 'ForgeModLoader-client-0.log' contains more information.
If you want to see the file, I copied the contents here:
2012-12-06 15:34:42 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.5.2.459 for Minecraft 1.4.5 loading
2012-12-06 15:34:42 [FINEST] [ForgeModLoader] All core mods are successfully located
2012-12-06 15:34:42 [FINEST] [ForgeModLoader] Discovering coremods
2012-12-06 15:34:42 [FINEST] [ForgeModLoader] Found library file argo-2.25.jar present and correct in lib dir
2012-12-06 15:34:42 [FINEST] [ForgeModLoader] Found library file guava-12.0.1.jar present and correct in lib dir
2012-12-06 15:34:42 [FINEST] [ForgeModLoader] Found library file asm-all-4.0.jar present and correct in lib dir
2012-12-06 15:34:42 [FINEST] [ForgeModLoader] Running coremod plugins
2012-12-06 15:34:42 [FINEST] [ForgeModLoader] Running coremod plugin FMLCorePlugin
2012-12-06 15:34:42 [FINEST] [ForgeModLoader] Coremod plugin FMLCorePlugin run successfully
2012-12-06 15:34:42 [FINEST] [ForgeModLoader] Running coremod plugin FMLForgePlugin
2012-12-06 15:34:42 [FINEST] [ForgeModLoader] Coremod plugin FMLForgePlugin run successfully
2012-12-06 15:34:42 [FINEST] [ForgeModLoader] Validating minecraft
2012-12-06 15:34:44 [FINEST] [ForgeModLoader] Minecraft validated, launching...
2012-12-06 15:34:47 [iNFO] [sTDOUT] 27 achievements
2012-12-06 15:34:47 [iNFO] [sTDOUT] 208 recipes
2012-12-06 15:34:47 [iNFO] [sTDOUT] Setting user: ZacharySClooney, -1824661143192008765
2012-12-06 15:34:47 [iNFO] [sTDOUT] LWJGL Version: 2.4.2
2012-12-06 15:34:48 [iNFO] [ForgeModLoader] Attempting early MinecraftForge initialization
2012-12-06 15:34:48 [iNFO] [sTDOUT] MinecraftForge v6.4.0.397 Initialized
2012-12-06 15:34:48 [iNFO] [ForgeModLoader] MinecraftForge v6.4.0.397 Initialized
2012-12-06 15:34:50 [iNFO] [sTDOUT] Replaced 84 ore recipies
2012-12-06 15:34:50 [iNFO] [ForgeModLoader] Completed early MinecraftForge initialization
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Building injected Mod Containers [cpw.mods.fml.common.FMLDummyContainer, net.minecraftforge.common.ForgeDummyContainer]
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Attempting to load mods contained in the minecraft jar file and associated classes
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Skipping known library file C:\Users\laptop3000\AppData\Roaming\.minecraft\bin\lwjgl.jar
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Skipping known library file C:\Users\laptop3000\AppData\Roaming\.minecraft\bin\jinput.jar
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Skipping known library file C:\Users\laptop3000\AppData\Roaming\.minecraft\bin\lwjgl_util.jar
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Found a minecraft related file at C:\Users\laptop3000\AppData\Roaming\.minecraft\bin\minecraft.jar, examining for mod candidates
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Skipping known library file C:\Users\laptop3000\AppData\Roaming\.minecraft\lib\argo-2.25.jar
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Skipping known library file C:\Users\laptop3000\AppData\Roaming\.minecraft\lib\guava-12.0.1.jar
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Skipping known library file C:\Users\laptop3000\AppData\Roaming\.minecraft\lib\asm-all-4.0.jar
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Minecraft jar mods loaded successfully
2012-12-06 15:34:50 [iNFO] [ForgeModLoader] Searching C:\Users\laptop3000\AppData\Roaming\.minecraft\mods for mods
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Found a candidate zip or jar file Thaumcraft3.0.0g.zip
2012-12-06 15:34:50 [FINE] [ForgeModLoader] Examining file minecraft.jar for potential mods
2012-12-06 15:34:50 [FINE] [ForgeModLoader] The mod container minecraft.jar appears to be missing an mcmod.info file
2012-12-06 15:34:52 [FINE] [ForgeModLoader] Examining file Thaumcraft3.0.0g.zip for potential mods
2012-12-06 15:34:52 [FINER] [ForgeModLoader] Located mcmod.info file in file Thaumcraft3.0.0g.zip
2012-12-06 15:34:53 [FINE] [ForgeModLoader] Identified an FMLMod type mod thaumcraft.common.Thaumcraft
2012-12-06 15:34:53 [FINEST] [ForgeModLoader] Parsed dependency info : [Forge@[6.4.1.407,)] [Forge@[6.4.1.407,), BuildCraft|Core, BuildCraft|Energy, Forestry, IC2] []
2012-12-06 15:34:53 [iNFO] [ForgeModLoader] Forge Mod Loader has identified 4 mods to load
2012-12-06 15:34:53 [FINE] [ForgeModLoader] Received a system property request ''
2012-12-06 15:34:53 [FINE] [ForgeModLoader] System property request managing the state of 0 mods
2012-12-06 15:34:53 [FINE] [ForgeModLoader] After merging, found state information for 0 mods
2012-12-06 15:34:53 [FINE] [ForgeModLoader] Activating mod mcp
2012-12-06 15:34:53 [FINE] [ForgeModLoader] Activating mod FML
2012-12-06 15:34:53 [FINE] [ForgeModLoader] Activating mod Forge
2012-12-06 15:34:53 [FINE] [ForgeModLoader] Enabling mod Thaumcraft
2012-12-06 15:34:53 [FINE] [ForgeModLoader] Activating mod Thaumcraft
2012-12-06 15:34:53 [FINE] [ForgeModLoader] Verifying mod requirements are satisfied
2012-12-06 15:34:53 [sEVERE] [ForgeModLoader] The mod Thaumcraft (Thaumcraft) requires mod versions [Forge@[6.4.1.407,)] to be available
2012-12-06 15:34:53 [FINE] [ForgeModLoader] Mod sorting data:
2012-12-06 15:34:53 [FINE] [ForgeModLoader] Thaumcraft(Thaumcraft:3.0.0g): Thaumcraft3.0.0g.zip (required-after:Forge@[6.4.1.407,);after:BuildCraft|Core;after:BuildCraft|Energy;after:Forestry;after:IC2)
2012-12-06 15:34:53 [iNFO] [sTDOUT] Starting up SoundSystem...
2012-12-06 15:34:54 [iNFO] [sTDOUT] Initializing LWJGL OpenAL
2012-12-06 15:34:54 [iNFO] [sTDOUT] (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
2012-12-06 15:34:54 [iNFO] [sTDOUT] OpenAL initialized.