I dont know how to do it do i just put it in my mods folder?
i got this error when i put the files from the hotfix into the first folder.
Mods loaded: 15
ModLoader Beta 1.8.1
mod_BuildCraftCore 2.2.4
mod_BuildCraftBuilders 2.2.4
mod_BuildCraftEnergy 2.2.4
mod_BuildCraftFactory 2.2.4
mod_BuildCraftTransport 2.2.4
mod_BuildCraft_BucketFiller 2.2.4_1
mod_RedPowerArray 2.0pr3b
mod_RedPowerCore 2.0pr3b
mod_RedPowerLighting 2.0pr3b
mod_RedPowerLogic 2.0pr3b
mod_RedPowerMachine 2.0pr3b
mod_RedPowerWiring 2.0pr3b
mod_RedPowerWorld 2.0pr3b
mod_zAdditionalPipes Rev29
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 dcd1f5e2 --------
Generated 11/3/11 4:07 PM
Minecraft: Minecraft Beta 1.8.1
OS: Mac OS X (i386) version 10.6.8
Java: 1.6.0_26, Apple Inc.
VM: Java HotSpot(TM) Client VM (mixed mode), Apple Inc.
LWJGL: 2.4.2
OpenGL: NVIDIA GeForce 320M OpenGL Engine version 2.1 NVIDIA-1.6.36, NVIDIA Corporation
java.lang.NoClassDefFoundError: ic2/platform/Platform
at mod_IC2_AdvMachine.<clinit>(mod_IC2_AdvMachine.java:128)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at ModLoader.addMod(ModLoader.java:275)
at ModLoader.readFromModFolder(ModLoader.java:1195)
at ModLoader.init(ModLoader.java:824)
at ModLoader.AddAllRenderers(ModLoader.java:186)
at aam.<init>(aam.java:61)
at aam.<clinit>(aam.java:10)
at net.minecraft.client.Minecraft.a(SourceFile:259)
at net.minecraft.client.Minecraft.run(SourceFile:629)
at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.ClassNotFoundException: ic2.platform.Platform
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)
... 16 more
--- END ERROR REPORT 303a4cf6 ----------