Okay so I was trying to install IC2 Equivalent Exchange, Redpower and stuff like that and they all require this.  So I put in modloader, then modloadermp, then nei and everything with that and the minecraft was fine, then I tried to install this and minecraft opened fine but everytime I tried to load a world it would freeze, blackscreen, and sit there.  I have used forge before I know how to install it but I can't tell if it is the problem.  Then I tried putting other mods in first that come with inficraft and it crashed at the loading screen.  Here is my crash report:

 

Mods loaded: 1

ModLoader 1.2.5

 

      Minecraft has crashed!     

      ----------------------     

 

Minecraft has stopped running because it encountered a problem.

 

 

 

 

--- BEGIN ERROR REPORT 9f578458 --------

Generated 5/5/12 8:51 AM

 

Minecraft: Minecraft 1.2.5

OS: Windows 7 (amd64) version 6.1

Java: 1.6.0_30, Sun Microsystems Inc.

VM: Java HotSpot 64-Bit Server VM (mixed mode), Sun Microsystems Inc.

LWJGL: 2.4.2

OpenGL: Intel® HD Graphics Family version 3.0.0 - Build 8.15.10.2342, Intel

 

java.lang.NoClassDefFoundError: forge/NetworkMod

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 sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at ModLoader.addMod(ModLoader.java:289)

at ModLoader.readFromClassPath(ModLoader.java:1210)

at ModLoader.init(ModLoader.java:886)

at ModLoader.addAllRenderers(ModLoader.java:189)

at ahu.<init>(ahu.java:77)

at ahu.<clinit>(ahu.java:8 )  (Had to make space here, it was making a sunglasses face)

at net.minecraft.client.Minecraft.a(SourceFile:273)

at net.minecraft.client.Minecraft.run(SourceFile:657)

at java.lang.Thread.run(Unknown Source)

Caused by: java.lang.ClassNotFoundException: forge.NetworkMod

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 sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

... 21 more

--- END ERROR REPORT 80c5d0ba ----------

 

 

 

you installed incorrectly

So I put in modloader, then modloadermp

 

Hint.

What programm you had used to install, and which way you isntalled?

 

and not enough items are  nicee think, but got partly the same like too many items.

 

partly  i can only say what i said ones, stop to install many mods in minecraft.jar.

 

only deal modloader, modloadermp, audiomod, player api, forge and optifine inside of jar. Rest first look a installation over mod folder.

ModLoaderMP is incompatible with Forge (mostly compatible in singleplayer, but completely incompatible with multiplayer), and ModLoaderMP is not longer needed anyway, do not install it.

over their is one trouble,

a part of modders won't change one time. so i hope you see the problem, and if playes so many singleplayer by a multiplyergame, than why block that. my client works realy fine and with my java i have no crash

as he said. MLMP and forge are completely incompatible server side, Client side they work just fine together.

If you don't like it, don't use a Forge server. Simple as that.

We had to become incompatible due to how crappy MLMP's updating has become.

Anyways, this will not turn into another MLMP debate. Its done and over.

He installed Forge wrong, the proper reply is to say try again.