When i start up minecraft with magic launcher i get this I am using Forge 6.0.1.332

i updated to 3.49 but it gives me something simmilar if not the same

2012-10-29 19:15:12 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.2.8.424 for Minecraft 1.4.2 loading

2012-10-29 19:15:12 [FINEST] [ForgeModLoader] All core mods are successfully located

2012-10-29 19:15:12 [FINEST] [ForgeModLoader] Discovering coremods

2012-10-29 19:15:12 [FINEST] [ForgeModLoader] Found a candidate coremod CodeChickenCore 0.6.1.jar

2012-10-29 19:15:12 [FINEST] [ForgeModLoader] Loading coremod CodeChickenCore 0.6.1.jar

2012-10-29 19:15:12 [FINEST] [ForgeModLoader] Loaded coremod CodeChickenCore 0.6.1.jar

2012-10-29 19:15:12 [FINEST] [ForgeModLoader] Found a candidate coremod NotEnoughItems 1.4.0.1.jar

2012-10-29 19:15:12 [FINEST] [ForgeModLoader] Loading coremod NotEnoughItems 1.4.0.1.jar

2012-10-29 19:15:12 [FINEST] [ForgeModLoader] Loaded coremod NotEnoughItems 1.4.0.1.jar

2012-10-29 19:15:12 [FINEST] [ForgeModLoader] Found library file argo-2.25.jar present and correct in lib dir

 

2012-10-29 19:15:12 [FINEST] [ForgeModLoader] Found library file guava-12.0.1.jar present and correct in lib dir

 

2012-10-29 19:15:12 [FINEST] [ForgeModLoader] Found library file asm-all-4.0.jar present and correct in lib dir

 

2012-10-29 19:15:13 [FINEST] [ForgeModLoader] Running coremod plugins

2012-10-29 19:15:13 [FINEST] [ForgeModLoader] Running coremod plugin FMLCorePlugin

2012-10-29 19:15:14 [iNFO] [sTDERR] java.lang.reflect.InvocationTargetException

2012-10-29 19:15:14 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2012-10-29 19:15:14 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2012-10-29 19:15:14 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2012-10-29 19:15:14 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2012-10-29 19:15:14 [iNFO] [sTDERR] at magic.launcher.Launcher.main(Unknown Source)

2012-10-29 19:15:14 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException: cpw.mods.fml.common.asm.FMLSanityChecker

2012-10-29 19:15:14 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:175)

2012-10-29 19:15:14 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchClient(FMLRelauncher.java:92)

2012-10-29 19:15:14 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.handleClientRelaunch(FMLRelauncher.java:26)

2012-10-29 19:15:14 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.main(Minecraft.java:2152)

2012-10-29 19:15:14 [iNFO] [sTDERR] ... 5 more

2012-10-29 19:15:14 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: cpw.mods.fml.common.asm.FMLSanityChecker

2012-10-29 19:15:14 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:264)

2012-10-29 19:15:14 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)

2012-10-29 19:15:14 [iNFO] [sTDERR] ... 8 more

2012-10-29 19:15:14 [iNFO] [sTDERR] Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.common.asm.FMLSanityChecker

2012-10-29 19:15:14 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:126)

2012-10-29 19:15:14 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)

2012-10-29 19:15:14 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)

2012-10-29 19:15:14 [iNFO] [sTDERR] at java.lang.Class.forName0(Native Method)

2012-10-29 19:15:14 [iNFO] [sTDERR] at java.lang.Class.forName(Unknown Source)

2012-10-29 19:15:14 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:256)

2012-10-29 19:15:14 [iNFO] [sTDERR] ... 9 more

2012-10-29 19:15:14 [iNFO] [sTDERR] Caused by: java.lang.ClassCircularityError: codechicken/core/asm/ObfuscationManager$ClassMapping

2012-10-29 19:15:14 [iNFO] [sTDERR] at codechicken.nei.asm.NEITransformer.transformer001(NEITransformer.java:32)

2012-10-29 19:15:14 [iNFO] [sTDERR] at codechicken.nei.asm.NEITransformer.transform(NEITransformer.java:105)

2012-10-29 19:15:14 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:163)

2012-10-29 19:15:14 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:119)

2012-10-29 19:15:14 [iNFO] [sTDERR] ... 14 more

 

You have old versions of CodeChickenCore and NotEnoughItems installed

 

Remove them from your coremods folder