Crash on startup

[IPKYOU788]

Hi, I'm getting a crash error when trying to startup my modpack. Here's the error in the crash report:

cpw.mods.fml.common.LoaderException: java.lang.NoSuchFieldError: manager
at cpw.mods.fml.common.LoadController.transition(LoadController.java:147)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:516)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:163)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:411)
at net.minecraft.client.MinecraftAppletImpl.func_71384_a(SourceFile:56)
at net.minecraft.client.Minecraft.run(Minecraft.java:733)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoSuchFieldError: manager
at ic2.core.IC2.load(IC2.java:814)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:494)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:192)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:172)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:103)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:515)
... 5 more

Any idea on how to fix this? I see that it's IC2, here's a link to my modpack, it's 1.5.2: https://dl.dropboxusercontent.com/s/z0x4k562rivjz0f/PotatoModpack.zip?dl=1&token_hash=AAGMZ6-iK39fdgAGJpUWk43Y_Mu1Xvit9xPW7V_FLoaXWA

Edited February 13, 2014 by IPKYOU788

[IPKYOU788]

Solved it. Galacticraft was outdated.