Help with crash please! (java.lang.NoClassDefFoundError: ic2/api/IC2Reactor)

  • I've been trying for a few hours to fix this crash, Can't seem to do it, I know it's not much as other people seem to be using the mod, Any help would be much appreciated.



    cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: ic2/api/IC2Reactor
    at cpw.mods.fml.common.LoadController.transition(LoadController.java:142)
    at cpw.mods.fml.common.Loader.initializeMods(Loader.java:696)
    at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:206)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:447)
    at net.minecraft.client.MinecraftAppletImpl.func_71384_a(SourceFile:56)
    at net.minecraft.client.Minecraft.run(Minecraft.java:732)
    at java.lang.Thread.run(Unknown Source)
    Caused by: java.lang.NoClassDefFoundError: ic2/api/IC2Reactor
    at miscperipherals.module.ModuleIC2.onPostInit(ModuleIC2.java:255)
    at miscperipherals.core.MiscPeripherals.onLoaded(MiscPeripherals.java:554)
    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.GeneratedMethodAccessor4.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.propogateStateMessage(LoadController.java:165)
    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:98)
    at cpw.mods.fml.common.Loader.initializeMods(Loader.java:695)
    ... 5 more
    Caused by: java.lang.ClassNotFoundException: ic2.api.IC2Reactor
    at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:238)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 32 more
    Caused by: java.lang.NullPointerException



    A detailed walkthrough of the error, its code path and all known details is as follows:
    ---------------------------------------------------------------------------------------


    -- System Details --
    Details:
    Minecraft Version: 1.5.1
    Operating System: Windows 7 (amd64) version 6.1
    Java Version: 1.7.0_17, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 397129344 bytes (378 MB) / 676528128 bytes (645 MB) up to 954466304 bytes (910 MB)
    JVM Flags: 2 total; -Xms512m -Xmx1024m
    AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
    Suspicious classes: FML and Forge are installed
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

  • 1) IC2 version?
    2) Forge version?
    3) Assuming you're using a Jenkins build, IC2 is going under a huge API rewrite.

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