Here is the error report


Mods loaded: 3
ModLoader 1.2.5
mod_ModLoaderMp 1.2.5v1
mod_TooManyItems 1.2.5 2012-04-07

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

Minecraft has stopped running because it encountered a problem.


--- BEGIN ERROR REPORT c05f411c --------
Generated 5/26/12 8:32 PM

Minecraft: Minecraft 1.2.5
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: forge/NetworkMod
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 ModLoader.addMod(ModLoader.java:289)
at ModLoader.readFromModFolder(ModLoader.java:1292)
at ModLoader.init(ModLoader.java:887)
at ModLoader.addAllRenderers(ModLoader.java:189)
at ahu.<init>(ahu.java:77)
at ahu.<clinit>(ahu.java:8)
at net.minecraft.client.Minecraft.a(SourceFile:273)
at net.minecraft.client.Minecraft.run(SourceFile:657)
at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.ClassNotFoundException: forge.NetworkMod
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 f189f3eb ----------