I CANT BELIEVE IT!!!! FINITELIQUID DOESNT WORK ON ALL THESE MODS??!?!?

heres the error report:
Mods loaded: 18
ModLoader 1.1
mod_Gas v5.4
mod_Liquid v5.4
mod_LiquidStandard v5.4
mod_ModLoaderMp 1.0.0
mod_Planes 1.1v16
mod_ReiMinimap v3.0_01 [1.1]
mod_TooManyItems 1.1 2012-01-12a
mod_Vehicles 1.1v4
mod_WW2Guns 1.1v3
mod_xray 1.2
mod_betterDungeons 0.91
mod_BuildCraftCore 2.2.12
mod_BuildCraftBuilders 2.2.12
mod_BuildCraftEnergy 2.2.12
mod_BuildCraftFactory 2.2.12
mod_BuildCraftTransport 2.2.12
mod_EntMover Version 0.4 for MC 1.1

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

Minecraft has stopped running because it encountered a problem.

If you wish to report this, please copy this entire text and email it to support@mojang.com.
Please include a description of what you did when the error occured.



--- BEGIN ERROR REPORT fd9c65d3 --------
Generated 08/02/12 3:57 PM

Minecraft: Minecraft 1.1
OS: Windows XP (x86) version 5.1
Java: 1.6.0_20, Sun Microsystems Inc.
VM: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
LWJGL: 2.4.2
OpenGL: ATI Radeon HD 3600 Series version 3.2.9232, ATI Technologies Inc.

java.lang.IllegalArgumentException: Slot 252 is already occupied by BlockMethane_Still@617584 when adding buildcraft.factory.BlockAutoWorkbench@6a4d1a
at oe.<init>(Block.java:175)
at aew.<init>(BlockContainer.java:7)
at buildcraft.factory.BlockAutoWorkbench.<init>(BlockAutoWorkbench.java:29)
at BuildCraftFactory.initialize(BuildCraftFactory.java:94)
at mod_BuildCraftFactory.ModsLoaded(mod_BuildCraftFactory.java:34)
at ModLoader.init(ModLoader.java:832)
at ModLoader.AddAllRenderers(ModLoader.java:189)
at afq.<init>(afq.java:80)
at afq.<clinit>(afq.java:9)
at net.minecraft.client.Minecraft.a(SourceFile:265)
at net.minecraft.client.Minecraft.run(SourceFile:648)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 35c305cb ----------

HELP ME