[support] How do i install alongside buildcraft?

    Hi all, i'm hoping this will be a quick solution. I have buildcraft working fine with the railcraft add on for buildcraft, i've put the industrial craft jar file into the mods folder and my minecraft crashes, is railcraft causing the problem ?


    [edit] Here is the error report


    Mods loaded: 11
    ModLoader 1.1
    mod_ModLoaderMp 1.0.0
    mod_MinecraftForge 1.3.4.29
    mod_Railcraft 3.4.2
    mod_BuildCraftCore 2.2.12
    mod_BuildCraftBuilders 2.2.12
    mod_BuildCraftEnergy 2.2.12
    mod_BuildCraftFactory 2.2.12
    mod_BuildCraftTransport 2.2.12
    mod_IC2 v1.71
    mod_BCIC2Crossover 1.24b for MC 1.1, BC 2.2.12, IC2 1.70


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


    Minecraft has stopped running because it encountered a problem.


    If you wish to report this, please copy this entire text and email it to support@mojang.com.
    Please include a description of what you did when the error occured.




    --- BEGIN ERROR REPORT 23b62ae7 --------
    Generated 05/03/12 11:59


    Minecraft: Minecraft 1.1
    OS: Mac OS X (x86_64) version 10.5.8
    Java: 1.6.0_26, Apple Inc.
    VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
    LWJGL: 2.4.2
    OpenGL: NVIDIA GeForce 9400M OpenGL Engine version 2.0 NVIDIA-1.5.48, NVIDIA Corporation


    java.lang.NoClassDefFoundError: forge/IUseItemFirst
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    at mod_IC2.initialize(mod_IC2.java:306)
    at ic2.platform.Ic2.load(Ic2.java:65)
    at ModLoader.init(ModLoader.java:824)
    at ModLoader.AddAllRenderers(ModLoader.java:189)
    at afq.<init>(afq.java:80)
    at afq.<clinit>(afq.java:9)
    at net.minecraft.client.Minecraft.a(Minecraft.java:316)
    at net.minecraft.client.Minecraft.run(Minecraft.java:620)
    at java.lang.Thread.run(Thread.java:680)
    Caused by: java.lang.ClassNotFoundException: forge.IUseItemFirst
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    ... 20 more
    --- END ERROR REPORT 971e2546 ----------



    This happens even if i move buildcraft out of the mods folder and replace it with industrial craft.

    Thanks, that solved the problem, do i just add the buildcraft mod files to the mod folder now?...i figured that last question on my own, now i guess i have to figure out what everything does :)