Hi, I have recently upgraded to 1.97 for IC2 and i am now unable to start minecraft up without giving me the following error.
36 mods loaded
Minecraft Forge 3.3.7.135
FML v2.2.48.135
Forge Mod Loader version 2.2.48.135 for Minecraft 1.2.5
mod_MinecraftForge : Loaded (minecraft.jar)
mod_4096FixForge : Loaded (minecraft.jar)
mod_CodeChickenCore : Loaded (minecraft.jar)
mod_NotEnoughItems : Loaded (minecraft.jar)
mod_CraftingTableIII : Loaded (CraftingTableIIIB1.8.zip)
mod_EE : Loaded (EE2ClientV1.4.6.5.jar)
mod_InvTweaks : Loaded (InvTweaks-1.41b-1.2.4.zip)
mod_PigbearLaser : Loaded (Laser Mod 1.5.zip)
mod_LogisticsPipes : Loaded (LogisticsPipes-BC3-0.2.5B.zip)
mod_Railcraft : Loaded (Railcraft_Client_5.3.3.zip)
mod_RedPowerControl : Loaded (RedPowerControl-2.0pr5b2.zip)
mod_RedPowerCore : Loaded (RedPowerCore-2.0pr5b2.zip)
mod_RedPowerLighting : Loaded (RedPowerLighting-2.0pr5b2.zip)
mod_RedPowerLogic : Loaded (RedPowerLogic-2.0pr5b2.zip)
mod_RedPowerMachine : Loaded (RedPowerMachine-2.0pr5b2.zip)
mod_RedPowerWiring : Loaded (RedPowerWiring-2.0pr5b2.zip)
mod_RedPowerWorld : Loaded (RedPowerWorld-2.0pr5b2.zip)
mod_SneakyPipes : Loaded (SneakyPipes-0.1.1.zip)
mod_stevescarts : Loaded (Steves Carts 1.3.3.zip)
mod_ThaumCraft : Loaded (ThaumCraft2.1.6c.zip)
mod_treecapitator : Loaded (Treecapitator 1.2.5.e.zip)
mod_WirelessRedstoneAddons : Loaded (WR-CBE Addons-Client 1.2.1.zip)
mod_WirelessRedstoneCore : Loaded (WR-CBE Core-Client 1.2.1.zip)
mod_WirelessRedstoneRedPower : Loaded (WR-CBE RedPower-Client 1.2.1.1.zip)
mod_ReiMinimap : Loaded ([1.2.5]ReiMinimap_v3.1.zip)
mod_AdditionalBuildcraftObjects : Loaded (buildcraft-C-additionalbuildcraftobjects-latest.zip)
mod_BuildCraftCore : Loaded (buildcraft-client-A-core-3.1.5.zip)
mod_BuildCraftBuilders : Loaded (buildcraft-client-B-builders-3.1.5.zip)
mod_BuildCraftEnergy : Loaded (buildcraft-client-B-energy-3.1.5.zip)
mod_BuildCraftFactory : Loaded (buildcraft-client-B-factory-3.1.5.zip)
mod_BuildCraftTransport : Loaded (buildcraft-client-B-transport-3.1.5.zip)
mod_BuildCraftSilicon : Loaded (buildcraft-client-C-silicon-3.1.5.zip)
mod_AdditionalPipes : Loaded (buildcraft-client-DA-additionalpipes-3.1.0.zip)
mod_BuildCraftZFP : Loaded (forestry-client-A-1.4.6.2.jar)
mod_Forestry : Loaded (forestry-client-A-1.4.6.2.jar)
mod_IronChest : Loaded (mod_ironchests-client-3.3.1.21.zip)
Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem.
--- BEGIN ERROR REPORT 28f86cd8 --------
Generated 6/26/12 10:40 AM
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 9400M OpenGL Engine version 2.1 NVIDIA-1.6.36, NVIDIA Corporation
cpw.mods.fml.common.LoaderException: java.util.zip.ZipException: error in opening zip file
at cpw.mods.fml.common.Loader.load(Loader.java:436)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:592)
at cpw.mods.fml.client.FMLClientHandler.onPreLoad(FMLClientHandler.java:193)
at net.minecraft.client.Minecraft.a(Minecraft.java:383)
at net.minecraft.client.Minecraft.run(Minecraft.java:735)
at java.lang.Thread.run(Thread.java:680)
Caused by: java.util.zip.ZipException: error in opening zip file
at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(ZipFile.java:127)
at java.util.zip.ZipFile.<init>(ZipFile.java:144)
at cpw.mods.fml.common.Loader.attemptFileLoad(Loader.java:550)
at cpw.mods.fml.common.Loader.load(Loader.java:419)
... 5 more
--- END ERROR REPORT 4e8f16d3 ----------
Minecraft works fine when i remove IC2.
Help please 
Thanks
Sumeth