Fatal error when starting up Big Dig

[Vinnoe]

I got an error and told me I needed to consult to a certain file.

what the file says:

2013-04-20 20:23:21 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.7.35.556 for Minecraft 1.4.7 loading

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] All core mods are successfully located

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Discovering coremods

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Found a candidate coremod [1.4.6]TreeCapitator.Forge.1.4.6.r07.Uni.CoreMod.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Loading coremod [1.4.6]TreeCapitator.Forge.1.4.6.r07.Uni.CoreMod.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Loaded coremod [1.4.6]TreeCapitator.Forge.1.4.6.r07.Uni.CoreMod.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Found a candidate coremod CodeChickenCore 0.7.3.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Loading coremod CodeChickenCore 0.7.3.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Loaded coremod CodeChickenCore 0.7.3.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Found a candidate coremod NotEnoughItems 1.4.7.0.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Loading coremod NotEnoughItems 1.4.7.0.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Loaded coremod NotEnoughItems 1.4.7.0.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Found a candidate coremod PowerCrystalsCore-1.0.3-34.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Loading coremod PowerCrystalsCore-1.0.3-34.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Loaded coremod PowerCrystalsCore-1.0.3-34.jar

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Found library file argo-2.25.jar present and correct in lib dir

2013-04-20 20:23:21 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2013-04-20 20:23:21 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2013-04-20 20:23:29 [FINEST] [ForgeModLoader] Download complete

2013-04-20 20:23:29 [iNFO] [ForgeModLoader] Download complete

2013-04-20 20:23:29 [FINEST] [ForgeModLoader] Library file guava-12.0.1.jar was downloaded and verified successfully

2013-04-20 20:23:29 [FINEST] [ForgeModLoader] Found library file asm-all-4.0.jar present and correct in lib dir

2013-04-20 20:23:29 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-147.jar

2013-04-20 20:23:29 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-147.jar

2013-04-20 20:23:36 [FINEST] [ForgeModLoader] Download complete

2013-04-20 20:23:36 [iNFO] [ForgeModLoader] Download complete

2013-04-20 20:23:36 [FINEST] [ForgeModLoader] Library file bcprov-jdk15on-147.jar was downloaded and verified successfully

2013-04-20 20:25:52 [iNFO] [sTDERR] java.lang.RuntimeException: java.lang.NoClassDefFoundError: com/google/common/collect/Multimap

2013-04-20 20:25:52 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:175)

2013-04-20 20:25:52 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:242)

2013-04-20 20:25:52 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)

2013-04-20 20:25:52 [iNFO] [sTDERR] at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)

2013-04-20 20:25:52 [iNFO] [sTDERR] at net.minecraft.Launcher.init(Launcher.java:127)

2013-04-20 20:25:52 [iNFO] [sTDERR] at org.spoutcraft.launcher.GameLauncher.runGame(GameLauncher.java:210)

2013-04-20 20:25:52 [iNFO] [sTDERR] at org.spoutcraft.launcher.GameUpdater.runGame(GameUpdater.java:136)

2013-04-20 20:25:52 [iNFO] [sTDERR] at org.spoutcraft.launcher.skin.components.LoginFrame.onEvent(LoginFrame.java:309)

2013-04-20 20:25:52 [iNFO] [sTDERR] at org.spoutcraft.launcher.skin.components.LoginWorker.doInBackground(LoginWorker.java:103)

2013-04-20 20:25:52 [iNFO] [sTDERR] at org.jdesktop.swingworker.SwingWorker$1.call(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.util.concurrent.FutureTask.run(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at org.jdesktop.swingworker.SwingWorker.run(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.lang.Thread.run(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] Caused by: java.lang.NoClassDefFoundError: com/google/common/collect/Multimap

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.lang.Class.getDeclaredConstructors0(Native Method)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.lang.Class.getConstructor0(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.lang.Class.newInstance0(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.lang.Class.newInstance(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.registerTransformer(RelaunchClassLoader.java:77)

2013-04-20 20:25:52 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:238)

2013-04-20 20:25:52 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)

2013-04-20 20:25:52 [iNFO] [sTDERR] ... 15 more

2013-04-20 20:25:52 [iNFO] [sTDERR] Caused by: java.lang.ClassNotFoundException: com.google.common.collect.Multimap

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.security.AccessController.doPrivileged(Native Method)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.net.URLClassLoader.findClass(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:110)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)

2013-04-20 20:25:52 [iNFO] [sTDERR] ... 23 more

2013-04-20 20:26:31 [iNFO] [sTDOUT] Maximum usable memory detected: 1642 mb

I have no idea what happened...