Same error with less mods. I have reinstalled because i figured out i had a problem with installing chickencore.
Display Spoiler
Mods loaded: 4
ModLoader 1.1
mod_ModLoaderMp 1.0.0
mod_IC2 v1.64
mod_NotEnoughItems 1.1.1
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 e881cf6e --------
Generated 1/29/12 8:16 AM
Minecraft: Minecraft 1.1
OS: Windows 7 (x86) version 6.1
Java: 1.6.0_30, Sun Microsystems Inc.
VM: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
LWJGL: 2.4.2
OpenGL: ATI Radeon HD 5670 version 4.1.10750 Compatibility Profile Context, ATI Technologies Inc.
java.lang.RuntimeException: java.lang.NullPointerException
at ic2.api.Ic2Recipes.getCompressorRecipes(Ic2Recipes.java:63)
at ic2.api.Ic2Recipes.addCompressorRecipe(Ic2Recipes.java:71)
at ic2.common.TileEntityCompressor.init(TileEntityCompressor.java:43)
at mod_IC2.initialize(mod_IC2.java:526)
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:330)
at net.minecraft.client.Minecraft.run(Minecraft.java:661)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at ic2.api.Ic2Recipes.getCompressorRecipes(Ic2Recipes.java:60)
... 11 more
--- END ERROR REPORT 33490d90 ----------