V1.81 Bug

    I've did exactly what the download instructions said and all the mods required to run industrial craft2 v1.81 worked fine when i tested them but when i but the industrial craft2 jar file into the mods folder and ran minecraft i got this:



    Mods loaded: 4
    ModLoader 1.2.3
    mod_MinecraftForge 1.4.0.46
    mod_ModLoaderMp 1.2.3v3
    mod_IC2 v1.81


    Minecraft has crashed!
    ----------------------


    Minecraft has stopped running because it encountered a problem.





    --- BEGIN ERROR REPORT 6593295c --------
    Generated 3/18/12 11:04 AM


    Minecraft: Minecraft 1.2.3
    OS: Windows 7 (amd64) version 6.1
    Java: 1.7.0_01, Oracle Corporation
    VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    LWJGL: 2.4.2
    OpenGL: AMD Radeon HD 6570 version 4.1.11079 Compatibility Profile Context, ATI Technologies Inc.


    java.lang.NoClassDefFoundError: forge/IEntityInteractHandler
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(Unknown Source)
    at java.security.SecureClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.defineClass(Unknown Source)
    at java.net.URLClassLoader.access$100(Unknown Source)
    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 java.lang.ClassLoader.loadClass(Unknown Source)
    at mod_IC2.load(mod_IC2.java:315)
    at ModLoader.init(ModLoader.java:890)
    at ModLoader.addAllRenderers(ModLoader.java:186)
    at aho.(aho.java:79)
    at aho.(aho.java:9)
    at net.minecraft.client.Minecraft.a(Minecraft.java:395)
    at net.minecraft.client.Minecraft.run(Minecraft.java:732)
    at java.lang.Thread.run(Unknown Source)
    Caused by: java.lang.ClassNotFoundException: forge.IEntityInteractHandler
    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 java.lang.ClassLoader.loadClass(Unknown Source)
    ... 19 more
    --- END ERROR REPORT 1044c01a ----------</init>