Looks like a minor bug, but i don't like errorlogs!
Using Current forge .163
Before Recomended .151
-snip bug at booth! versions.
2012-09-18 02:12:51 [INFO] [STDOUT] [IC2] Loading IC2 submodule: cgIntegration
2012-09-18 02:12:51 [INFO] [STDERR] java.lang.ClassNotFoundException: CraftGuide.API.CraftGuideAPIObject
2012-09-18 02:12:51 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:125)
2012-09-18 02:12:51 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at net.minecraftforge.transformers.EventTransformer.buildEvents(EventTransformer.java:54)
2012-09-18 02:12:51 [INFO] [STDERR] at net.minecraftforge.transformers.EventTransformer.transform(EventTransformer.java:35)
2012-09-18 02:12:51 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:162)
2012-09-18 02:12:51 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:118)
2012-09-18 02:12:51 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at ic2.cgIntegration.SubModule.init(SubModule.java:10)
2012-09-18 02:12:51 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2012-09-18 02:12:51 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at ic2.common.IC2.loadSubModule(IC2.java:774)
2012-09-18 02:12:51 [INFO] [STDERR] at ic2.common.IC2.modsLoaded(IC2.java:683)
2012-09-18 02:12:51 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2012-09-18 02:12:51 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:424)
2012-09-18 02:12:51 [INFO] [STDERR] at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)
2012-09-18 02:12:51 [INFO] [STDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2012-09-18 02:12:51 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)
2012-09-18 02:12:51 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)
2012-09-18 02:12:51 [INFO] [STDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:268)
2012-09-18 02:12:51 [INFO] [STDERR] at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:124)
2012-09-18 02:12:51 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2012-09-18 02:12:51 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)
2012-09-18 02:12:51 [INFO] [STDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
2012-09-18 02:12:51 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)
2012-09-18 02:12:51 [INFO] [STDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)
2012-09-18 02:12:51 [INFO] [STDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:268)
2012-09-18 02:12:51 [INFO] [STDERR] at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:81)
2012-09-18 02:12:51 [INFO] [STDERR] at cpw.mods.fml.common.Loader.initializeMods(Loader.java:633)
2012-09-18 02:12:51 [INFO] [STDERR] at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:176)
2012-09-18 02:12:51 [INFO] [STDERR] at net.minecraft.client.Minecraft.a(Minecraft.java:459)
2012-09-18 02:12:51 [INFO] [STDERR] at net.minecraft.client.Minecraft.run(Minecraft.java:746)
2012-09-18 02:12:51 [INFO] [STDERR] at java.lang.Thread.run(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] Caused by: java.lang.NullPointerException
2012-09-18 02:12:51 [INFO] [STDERR] at org.objectweb.asm.ClassReader.<init>(Unknown Source)
2012-09-18 02:12:51 [INFO] [STDERR] at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:27)
2012-09-18 02:12:51 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:162)
2012-09-18 02:12:51 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:118)
2012-09-18 02:12:51 [INFO] [STDERR] ... 44 more
2012-09-18 02:12:51 [INFO] [STDOUT] [IC2] Submodule not loaded: java.lang.reflect.InvocationTargetException: java.lang.NoClassDefFoundError: ic2/cgIntegration/common/AdvRecipeGenerator
