Hey. I tried to install IC2 now 4 times. And i alwys got this error message:
Mods loaded: 4
ModLoader 1.2.3
mod_ModLoaderMp 1.2.3v3
mod_MinecraftForge 1.4.0.46
mod_IC2 v1.81
Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem.
--- BEGIN ERROR REPORT 6d3d135c --------
Generated 18.03.12 15:31
Minecraft: Minecraft 1.2.3
OS: Windows 7 (amd64) version 6.1
Java: 1.6.0_24, Sun Microsystems Inc.
VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
LWJGL: 2.4.2
OpenGL: ATI Radeon HD 5700 Series version 4.2.11318 Compatibility Profile Context, ATI Technologies Inc.
java.lang.NoClassDefFoundError: forge/IEntityInteractHandler
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
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$000(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.<init>(aho.java:79)
at aho.<clinit>(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.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 6407d35 ----------
Thanks for answering.