Mo'creatures error

*** MagicMinecraftLauncher 1.0.0 ***
Disable inactive mods
2013-04-07 00:27:14 [INFO] [ForgeModLoader] Forge Mod Loader version 5.1.8.611 for Minecraft 1.5.1 loading
2013-04-07 00:27:14 [INFO] [ForgeModLoader] Java is Java HotSpot(TM) 64-Bit Server VM, version 1.7.0_17, running on Windows 7:amd64:6.1, installed at C:\Program Files\Java\jre7
2013-04-07 00:27:14 [INFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-14.0-rc3.jar
2013-04-07 00:27:37 [INFO] [ForgeModLoader] Download complete
2013-04-07 00:27:37 [INFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-148.jar
2013-04-07 00:28:21 [INFO] [ForgeModLoader] Download complete
2013-04-07 00:28:21 [INFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/scala-library.jar
2013-04-07 00:29:47 [INFO] [ForgeModLoader] Download complete
2013-04-07 00:29:52 [INFO] [STDERR] java.lang.reflect.InvocationTargetException
2013-04-07 00:29:52 [INFO] [STDERR]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2013-04-07 00:29:52 [INFO] [STDERR]     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     at java.lang.reflect.Method.invoke(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     at magic.launcher.Launcher.main(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR] Caused by: java.lang.RuntimeException: java.lang.NoClassDefFoundError: com/google/common/collect/Multimap
2013-04-07 00:29:52 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)
2013-04-07 00:29:52 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.relaunchClient(FMLRelauncher.java:104)
2013-04-07 00:29:52 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.handleClientRelaunch(FMLRelauncher.java:38)
2013-04-07 00:29:52 [INFO] [STDERR]     at net.minecraft.client.Minecraft.main(Minecraft.java:2228)
2013-04-07 00:29:52 [INFO] [STDERR]     ... 5 more
2013-04-07 00:29:52 [INFO] [STDERR] Caused by: java.lang.NoClassDefFoundError: com/google/common/collect/Multimap
2013-04-07 00:29:52 [INFO] [STDERR]     at java.lang.Class.getDeclaredConstructors0(Native Method)
2013-04-07 00:29:52 [INFO] [STDERR]     at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     at java.lang.Class.getConstructor0(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     at java.lang.Class.newInstance0(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     at java.lang.Class.newInstance(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     at cpw.mods.fml.relauncher.RelaunchClassLoader.registerTransformer(RelaunchClassLoader.java:96)
2013-04-07 00:29:52 [INFO] [STDERR]     at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:271)
2013-04-07 00:29:52 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
2013-04-07 00:29:52 [INFO] [STDERR]     ... 8 more
2013-04-07 00:29:52 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: com.google.common.collect.Multimap
2013-04-07 00:29:52 [INFO] [STDERR]     at java.net.URLClassLoader$1.run(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     at java.net.URLClassLoader$1.run(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     at java.security.AccessController.doPrivileged(Native Method)
2013-04-07 00:29:52 [INFO] [STDERR]     at java.net.URLClassLoader.findClass(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:134)
2013-04-07 00:29:52 [INFO] [STDERR]     at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-07 00:29:52 [INFO] [STDERR]     ... 16 more