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I get the fatal error message and this is what the log says unless im missing something i dont see anything wrong
2013-09-14 13:01:07 [INFO] [ForgeModLoader] Forge Mod Loader version 5.2.23.737 for Minecraft 1.5.2 loading
2013-09-14 13:01:07 [INFO] [ForgeModLoader] Java is Java HotSpot(TM) Client VM, version 1.7.0_25, running on Windows 8:x86:6.2, installed at C:\Program Files (x86)\Java\jre7
2013-09-14 13:01:07 [FINE] [ForgeModLoader] Java classpath at launch is C:\Users\Benji\Desktop\Minecraft\Minecraft (Old).exe
2013-09-14 13:01:07 [FINE] [ForgeModLoader] Java library path at launch is C:\Program Files (x86)\Java\jre7\bin;C:\windows\Sun\Java\bin;C:\windows\system32;C:\windows;c:\Program Files (x86)\AMD APP\bin\x86_64;c:\Program Files (x86)\AMD APP\bin\x86;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;c:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files (x86)\Java\jre7\bin;.
2013-09-14 13:01:07 [FINE] [ForgeModLoader] Enabling runtime deobfuscation
2013-09-14 13:01:07 [FINEST] [ForgeModLoader] All core mods are successfully located
2013-09-14 13:01:07 [FINEST] [ForgeModLoader] Discovering coremods
2013-09-14 13:01:07 [FINEST] [ForgeModLoader] Found library file argo-small-3.2.jar present and correct in lib dir
2013-09-14 13:01:07 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-14.0-rc3.jar
2013-09-14 13:01:07 [INFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-14.0-rc3.jar
2013-09-14 13:02:07 [FINEST] [ForgeModLoader] Download complete
2013-09-14 13:02:07 [INFO] [ForgeModLoader] Download complete
2013-09-14 13:02:07 [FINEST] [ForgeModLoader] Library file guava-14.0-rc3.jar was downloaded and verified successfully
2013-09-14 13:02:07 [FINEST] [ForgeModLoader] Found library file asm-all-4.1.jar present and correct in lib dir
2013-09-14 13:02:07 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar
2013-09-14 13:02:07 [INFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar
2013-09-14 13:03:03 [FINEST] [ForgeModLoader] Download complete
2013-09-14 13:03:03 [INFO] [ForgeModLoader] Download complete
2013-09-14 13:03:03 [FINEST] [ForgeModLoader] Library file bcprov-jdk15on-148.jar was downloaded and verified successfully
2013-09-14 13:03:03 [FINEST] [ForgeModLoader] Found library file deobfuscation_data_1.5.2.zip present and correct in lib dir
2013-09-14 13:03:03 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/scala-library.jar
2013-09-14 13:03:03 [INFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/scala-library.jar
2013-09-14 13:03:52 [FINEST] [ForgeModLoader] Download complete
2013-09-14 13:03:52 [INFO] [ForgeModLoader] Download complete
2013-09-14 13:03:52 [FINEST] [ForgeModLoader] Library file scala-library.jar was downloaded and verified successfully
2013-09-14 13:04:00 [INFO] [STDERR] Exception in thread "Thread-5" java.lang.RuntimeException: java.lang.NoClassDefFoundError: com/google/common/collect/Multimap
2013-09-14 13:04:00 [INFO] [STDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)
2013-09-14 13:04:00 [INFO] [STDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:259)
2013-09-14 13:04:00 [INFO] [STDERR] at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:229)
2013-09-14 13:04:00 [INFO] [STDERR] at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)
2013-09-14 13:04:00 [INFO] [STDERR] at net.minecraft.Launcher.replace(Launcher.java:136)
2013-09-14 13:04:00 [INFO] [STDERR] at net.minecraft.Launcher$1.run(Launcher.java:79)
2013-09-14 13:04:00 [INFO] [STDERR] Caused by: java.lang.NoClassDefFoundError: com/google/common/collect/Multimap
2013-09-14 13:04:00 [INFO] [STDERR] at java.lang.Class.getDeclaredConstructors0(Native Method)
2013-09-14 13:04:00 [INFO] [STDERR] at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
2013-09-14 13:04:00 [INFO] [STDERR] at java.lang.Class.getConstructor0(Unknown Source)
2013-09-14 13:04:00 [INFO] [STDERR] at java.lang.Class.newInstance(Unknown Source)
2013-09-14 13:04:00 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.registerTransformer(RelaunchClassLoader.java:122)
2013-09-14 13:04:00 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:271)
2013-09-14 13:04:00 [INFO] [STDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
2013-09-14 13:04:00 [INFO] [STDERR] ... 5 more
2013-09-14 13:04:00 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: com.google.common.collect.Multimap
2013-09-14 13:04:00 [INFO] [STDERR] at java.net.URLClassLoader$1.run(Unknown Source)
2013-09-14 13:04:00 [INFO] [STDERR] at java.net.URLClassLoader$1.run(Unknown Source)
2013-09-14 13:04:00 [INFO] [STDERR] at java.security.AccessController.doPrivileged(Native Method)
2013-09-14 13:04:00 [INFO] [STDERR] at java.net.URLClassLoader.findClass(Unknown Source)
2013-09-14 13:04:00 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:160)
2013-09-14 13:04:00 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-09-14 13:04:00 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-09-14 13:04:00 [INFO] [STDERR] ... 12 more