FTB wont load Agrarian Skies

<Pack Loading Stuff...>
Logging in...
Beginning authlib authentication attempt
successfully created YggdrasilAuthenticationService
using Authlib authentication data
Login complete.
Syncing Assets:
Java Path: C:\Program Files\Java\jre8\bin\javaw.exe
Setting MinMemory to 256
Setting MaxMemory to 1024
Defaulting PermSize to 256m
Apr 01, 2014 8:35:23 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Apr 01, 2014 8:35:23 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Apr 01, 2014 8:35:23 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/collect/Lists
at cpw.mods.fml.common.launcher.FMLTweaker.acceptOptions(FMLTweaker.java:52)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:110)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
Caused by: java.lang.ClassNotFoundException: com.google.common.collect.Lists
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 3 more
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=256m; support was removed in 8.0