Tekkit Crash! I cannot Log on

[MoopyLoopy]

Title: Tekkit Crash! I cannot Log on

Version: 3.1.2

OS: Windows 7 (amd64) version 6.1

Java Version: 1.6.0_24, Sun Microsystems Inc.

Description of Problem:

Whenever i try to play tekkit classic a message pops up saying that all of the mods were loaded and initialized, but minecraft crashed and minecraft encountered a problem. I've had this problem for a while and i have no idea what is wrong or how to fix it. Please help!

Error Messages:

Error Log:

--- BEGIN ERROR REPORT 1f2e317e --------

Generated 10/1/13 3:37 PM



Minecraft: Minecraft 1.2.5

OS: Windows 7 (amd64) version 6.1

Java: 1.6.0_24, 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 8.15.10.2279, Intel



java.lang.IllegalArgumentException: Slot 241 is already occupied by codechicken.enderstorage.BlockEnderChest@196a1a66 when adding ic2.common.BlockRubSapling@4eb2b93

	at pb.<init>(Block.java:251)

	at qk.<init>(SourceFile:11)

	at qk.<init>(SourceFile:19)

	at zc.<init>(SourceFile:19)

	at ic2.common.BlockRubSapling.<init>(BlockRubSapling.java:24)

	at mod_IC2.load(mod_IC2.java:224)

	at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:356)

	at cpw.mods.fml.common.Loader.modInit(Loader.java:273)

	at cpw.mods.fml.common.Loader.initializeMods(Loader.java:628)

	at cpw.mods.fml.client.FMLClientHandler.onLoadComplete(FMLClientHandler.java:223)

	at net.minecraft.client.Minecraft.a(Minecraft.java:429)

	at net.minecraft.client.Minecraft.run(Minecraft.java:738)

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

--- END ERROR REPORT 90cb4e32 ----------