FML cannot start in minecrafts current configuration

I am using MultiMC to install MCForge and I get this error:

2012-11-14 13:34:14 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.2.16.431 for Minecraft 1.4.2 loading
2012-11-14 13:34:14 [FINEST] [ForgeModLoader] All core mods are successfully located
2012-11-14 13:34:14 [FINEST] [ForgeModLoader] Discovering coremods
2012-11-14 13:34:14 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/argo-2.25.jar
2012-11-14 13:34:14 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/argo-2.25.jar
2012-11-14 13:34:14 [FINEST] [ForgeModLoader] Download complete
2012-11-14 13:34:14 [iNFO] [ForgeModLoader] Download complete
2012-11-14 13:34:14 [FINEST] [ForgeModLoader] Library file argo-2.25.jar was downloaded and verified successfully

2012-11-14 13:34:14 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar
2012-11-14 13:34:14 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar
2012-11-14 13:34:20 [FINEST] [ForgeModLoader] Download complete
2012-11-14 13:34:20 [iNFO] [ForgeModLoader] Download complete
2012-11-14 13:34:20 [FINEST] [ForgeModLoader] Library file guava-12.0.1.jar was downloaded and verified successfully

2012-11-14 13:34:20 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/asm-all-4.0.jar
2012-11-14 13:34:20 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/asm-all-4.0.jar
2012-11-14 13:34:25 [FINEST] [ForgeModLoader] Download complete
2012-11-14 13:34:25 [iNFO] [ForgeModLoader] Download complete
2012-11-14 13:34:25 [FINEST] [ForgeModLoader] Library file asm-all-4.0.jar was downloaded and verified successfully

2012-11-14 13:34:36 [iNFO] [sTDERR] Exception in thread "main" java.lang.RuntimeException: java.lang.NoClassDefFoundError: org/objectweb/asm/ClassVisitor
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:175)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:242)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:28)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at net.minecraft.Launcher.init(Launcher.java:108)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at MCFrame.start(MCFrame.java:78)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at MultiMCLauncher.main(MultiMCLauncher.java:251)
2012-11-14 13:34:36 [iNFO] [sTDERR] Caused by: java.lang.NoClassDefFoundError: org/objectweb/asm/ClassVisitor
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at java.lang.Class.getDeclaredConstructors0(Native Method)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at java.lang.Class.getConstructor0(Unknown Source)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at java.lang.Class.newInstance0(Unknown Source)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at java.lang.Class.newInstance(Unknown Source)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.RelaunchClassLoader.registerTransformer(RelaunchClassLoader.java:64)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:237)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	... 6 more
2012-11-14 13:34:36 [iNFO] [sTDERR] Caused by: java.lang.ClassNotFoundException: org.objectweb.asm.ClassVisitor
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at java.net.URLClassLoader$1.run(Unknown Source)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at java.net.URLClassLoader$1.run(Unknown Source)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at java.security.AccessController.doPrivileged(Native Method)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at java.net.URLClassLoader.findClass(Unknown Source)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:109)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at java.lang.ClassLoader.loadClass(Unknown Source)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	at java.lang.ClassLoader.loadClass(Unknown Source)
2012-11-14 13:34:36 [iNFO] [sTDERR] 	... 14 more

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