[IC2 v1.81] Error on startup

Hey guys, just noticed IC2 for 1.2.3 came out (hurray!). But the game crashed when I started. Everything is installed fine, ModLoader + MP, Forge, etc. I do have a lot of other mods installed, here's the error log:

Quote

Mods loaded: 29
ModLoader 1.2.3
mod_MinecraftForge 1.4.0.46
mod_ModLoaderMp 1.2.3v3
mod_NotEnoughItems 1.1.3
mod_ReiMinimap v3.0_03 [1.2.3]
mod_betterDungeons 0.921
mod_AdditionalBuildcraftObjects 0.9.1-84 (MC 1.2.3, BC 3.1.4pre)
mod_BuildCraftCore 3.1.4
mod_BuildCraftBuilders 3.1.4
mod_BuildCraftEnergy 3.1.4
mod_BuildCraftFactory 3.1.4
mod_BuildCraftTransport 3.1.4
mod_BuildCraftSilicon 3.1.4
mod_EE 1.4.0.3
mod_Forestry 1.4.0.2
mod_BuildCraftZFP (Forestry Package)
mod_IC2 v1.81
mod_InvTweaks 1.40 (1.2.3)
mod_PortalGun 1.2.3v1
mod_RedPowerArray 2.0pr4d
mod_RedPowerCore 2.0pr4e
mod_RedPowerLighting 2.0pr4e
mod_RedPowerLogic 2.0pr4e
mod_RedPowerMachine 2.0pr4e
mod_RedPowerWiring 2.0pr4e
mod_RedPowerWorld 2.0pr4e
mod_Timber 1.2.3
mod_WirelessRedstone 1.5
mod_WirelessRedstoneDev 1.5

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

Minecraft has stopped running because it encountered a problem.

--- BEGIN ERROR REPORT 258a92a5 --------
Generated 18/03/12 15:12

Minecraft: Minecraft 1.2.3
OS: Windows 7 (amd64) version 6.1
Java: 1.7.0, Oracle Corporation
VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
LWJGL: 2.4.2
OpenGL: ATI Radeon HD 5700 Series version 4.2.11554 Compatibility Profile Context, ATI Technologies Inc.

java.lang.NoClassDefFoundError: forge/IEntityInteractHandler
at java.lang.ClassLoader.defineClass1(Native Method)
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$100(Unknown Source)
at java.net.URLClassLoader$1.run(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.(aho.java:79)
at aho.(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.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 52361ab ----------

Display More

Quote from SvEgiiVEteR

Risugami's ModLoader 1.2.3
SDK's ModLoaderMP Client 1.2.3 v3
SpaceToad's/Eloraam's MCForge Client 1.4.0.52 or higher

There's a new Forge?! Good God, I literally downloaded Forge today. *moves back to hovel*. Thank you for the quick reply!

Edit:
Oh right, I was using the Recommended not Latest.