Minecraft 1.4.2 crash when startup

[wzx1996]

2012-10-28 21:19:25 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.2.6.422 for Minecraft 1.4.2 loading
2012-10-28 21:19:25 [FINEST] [ForgeModLoader] All core mods are successfully located
2012-10-28 21:19:25 [FINEST] [ForgeModLoader] Discovering coremods
2012-10-28 21:19:26 [FINEST] [ForgeModLoader] Found library file argo-2.25.jar present and correct in lib dir

2012-10-28 21:19:26 [iNFO] [sTDOUT] Downloading file: files.minecraftforge.net/fmllibs/guava-12.0.1.jar
2012-10-28 21:19:26 [iNFO] [sTDOUT] The libFile's path is D:\Users\Administrator\Downloads\[1.25]汉化小地图+中文输入\1_4_2_nei\.minecraft\lib\guava-12.0.1.jar
2012-10-28 21:19:26 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar
2012-10-28 21:19:26 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar
2012-10-28 21:19:45 [FINEST] [ForgeModLoader] Download complete
2012-10-28 21:19:45 [iNFO] [ForgeModLoader] Download complete
2012-10-28 21:19:45 [FINEST] [ForgeModLoader] Library file guava-12.0.1.jar was downloaded and verified successfully

2012-10-28 21:19:45 [FINEST] [ForgeModLoader] Found library file asm-all-4.0.jar present and correct in lib dir

2012-10-28 21:20:01 [iNFO] [sTDERR] Exception in thread "main" java.lang.RuntimeException: java.lang.NoClassDefFoundError: com/google/common/collect/Multimap
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:175)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.relaunchClient(FMLRelauncher.java:92)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.handleClientRelaunch(FMLRelauncher.java:26)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at net.minecraft.client.Minecraft.main(Minecraft.java:2152)
2012-10-28 21:20:01 [iNFO] [sTDERR] Caused by: java.lang.NoClassDefFoundError: com/google/common/collect/Multimap
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at java.lang.Class.getDeclaredConstructors0(Native Method)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at java.lang.Class.getConstructor0(Unknown Source)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at java.lang.Class.newInstance0(Unknown Source)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at java.lang.Class.newInstance(Unknown Source)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.RelaunchClassLoader.registerTransformer(RelaunchClassLoader.java:62)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:237)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	... 3 more
2012-10-28 21:20:01 [iNFO] [sTDERR] Caused by: java.lang.ClassNotFoundException: com.google.common.collect.Multimap
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at java.net.URLClassLoader$1.run(Unknown Source)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at java.net.URLClassLoader$1.run(Unknown Source)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at java.security.AccessController.doPrivileged(Native Method)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at java.net.URLClassLoader.findClass(Unknown Source)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:101)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at java.lang.ClassLoader.loadClass(Unknown Source)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	at java.lang.ClassLoader.loadClass(Unknown Source)
2012-10-28 21:20:01 [iNFO] [sTDERR] 	... 11 more

[HMPerson1]

Does it happen on a restart?

[luacs1998]

Please, do us all a favour and read the EAQ before posting, thank you -.-