Hi. I have tried to install BuildCraft 4.0.1 on Minecraft 1.6.2, to go along with a few other mods, but get a crash error before it loads.
The config file has been created as I had to alter the biomes for oildesert and oilocean due to conflicts.

Edit: This can be removed. I found the problem. I have Millinaire installed too and the block IDs were conflicting.
I changed the Buildcraft block IDs and now it is loading fine.

Thanks for a brilliant mod and all the months of work you've put into this.