tekkit crashes after mojang screen

[FarFromSober]

Title: tekkit crashes after mojang screen

Version: 3.1.2

OS: Windows 7 Home Premium

Java Version: Java 6 (64-bit)

Description of Problem:

I dont know much about code but it seems like the enderchest is in the same spot as the rubber tree sapling and its fawking up.

Error Messages:

Error Log:

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

Generated 1/27/13 6:11 PM

 

Minecraft: Minecraft 1.2.5

OS: Windows 7 (amd64) version 6.1

Java: 1.6.0_22, 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 8.15.10.2291, Intel

 

java.lang.IllegalArgumentException: Slot 241 is already occupied by codechicken.enderstorage.BlockEnderChest@76bb5e95 when adding ic2.common.BlockRubSapling@73ec519

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 eeaec695 ----------

EDIT: nevermind, fixed by backing up all files from .techniclauncher except for the saves file and running the launcher again.