Custom Modpack Help

[IPKYOU788]

Hi, I've created a new modpack, and got an error when starting up. Any ideas on how to fix this? Here's the error in the Forge log:

2014-02-12 19:45:21 [INFO] [STDERR] Exception in thread "Minecraft main thread" java.lang.NoClassDefFoundError: net/minecraft/util/ResourceLocation
2014-02-12 19:45:21 [INFO] [STDERR]  at ic2.core.block.personal.TileEntityPersonalChestRenderer.<clinit>(TileEntityPersonalChestRenderer.java:57)
2014-02-12 19:45:21 [INFO] [STDERR]  at ic2.core.PlatformClient.<init>(PlatformClient.java:85)
2014-02-12 19:45:21 [INFO] [STDERR]  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
2014-02-12 19:45:21 [INFO] [STDERR]  at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at java.lang.reflect.Constructor.newInstance(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at java.lang.Class.newInstance(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at cpw.mods.fml.common.ProxyInjector.inject(ProxyInjector.java:50)
2014-02-12 19:45:21 [INFO] [STDERR]  at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:471)
2014-02-12 19:45:21 [INFO] [STDERR]  at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at java.lang.reflect.Method.invoke(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
2014-02-12 19:45:21 [INFO] [STDERR]  at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2014-02-12 19:45:21 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
2014-02-12 19:45:21 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
2014-02-12 19:45:21 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.post(EventBus.java:267)
2014-02-12 19:45:21 [INFO] [STDERR]  at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:165)
2014-02-12 19:45:21 [INFO] [STDERR]  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2014-02-12 19:45:21 [INFO] [STDERR]  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at java.lang.reflect.Method.invoke(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
2014-02-12 19:45:21 [INFO] [STDERR]  at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2014-02-12 19:45:21 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
2014-02-12 19:45:21 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
2014-02-12 19:45:21 [INFO] [STDERR]  at com.google.common.eventbus.EventBus.post(EventBus.java:267)
2014-02-12 19:45:21 [INFO] [STDERR]  at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:98)
2014-02-12 19:45:21 [INFO] [STDERR]  at cpw.mods.fml.common.Loader.loadMods(Loader.java:503)
2014-02-12 19:45:21 [INFO] [STDERR]  at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:160)
2014-02-12 19:45:21 [INFO] [STDERR]  at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:411)
2014-02-12 19:45:21 [INFO] [STDERR]  at net.minecraft.client.MinecraftAppletImpl.func_71384_a(SourceFile:56)
2014-02-12 19:45:21 [INFO] [STDERR]  at net.minecraft.client.Minecraft.run(Minecraft.java:733)
2014-02-12 19:45:21 [INFO] [STDERR]  at java.lang.Thread.run(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: net.minecraft.util.ResourceLocation
2014-02-12 19:45:21 [INFO] [STDERR]  at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:238)
2014-02-12 19:45:21 [INFO] [STDERR]  at java.lang.ClassLoader.loadClass(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at java.lang.ClassLoader.loadClass(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  ... 34 more
2014-02-12 19:45:21 [INFO] [STDERR] Caused by: java.lang.NullPointerException
2014-02-12 19:45:21 [INFO] [STDERR]  at org.objectweb.asm.ClassReader.<init>(Unknown Source)
2014-02-12 19:45:21 [INFO] [STDERR]  at codechicken.core.asm.ASMHelper.createClassNode(ASMHelper.java:105)
2014-02-12 19:45:21 [INFO] [STDERR]  at codechicken.core.asm.ClassHeirachyManager.transform(ClassHeirachyManager.java:90)
2014-02-12 19:45:21 [INFO] [STDERR]  at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:352)
2014-02-12 19:45:21 [INFO] [STDERR]  at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:225)
2014-02-12 19:45:21 [INFO] [STDERR]  ... 36 more
2014-02-12 19:45:39 [INFO] [STDOUT] Exiting mod pack

Edited February 13, 2014 by IPKYOU788

[IPKYOU788]

Fixed it, I was using a later version of IC2.

Edited February 13, 2014 by IPKYOU788