Ender Chests trying to replace(?) rubber saplings (ic2)

[I_Redacted_I]

Title: Ender Chests trying to replace(?) rubber saplings (ic2)

Version: 3.1.2

OS: Windows 7 PC

Java Version: 1.7.0_3

Description of Problem:

I think the ender chest is attempting to replace my rubber saplings...

Error Messages:

Error Log:

java.lang.IllegalArgumentException: Slot 241 is already occupied by codechicken.enderstorage.BlockEnderChest@6476d3 when adding ic2.common.BlockRubSapling@1b51e06

	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)

[Sp0nge]

Do another clean install. For some reason, eighter a mod is added or you tried to change some configvalues, ID`s are conflicting.