Compiled on 11/07/2016

Title pretty much says it all. Tube was connected to a gas-burning generator.

http://paste.ee/p/zbTtB

Here's a screenshot of the setup if needed:
http://imgur.com/C2wcCye

This happens with every wrench, looks like it's trying to use the CoFH API:

java.lang.NoSuchMethodError: cofh.api.item.IToolHammer.isUsable(Lnet/minecraft/item/ItemStack;Lnet/minecraft/entity/EntityLivingBase;Lnet/minecraft/util/math/BlockPos;)Z
    at mekanism.common.util.MekanismUtils.hasUsableWrench(MekanismUtils.java:1509) ~[MekanismUtils.class:?]
    at mekanism.common.multipart.PartSidedPipe.onActivated(PartSidedPipe.java:596) ~[PartSidedPipe.class:?]
    at mcmultipart.multipart.MultipartContainer.onActivated(MultipartContainer.java:369) ~[MultipartContainer.class:?]
    at mcmultipart.block.BlockMultipartContainer.func_180639_a(BlockMultipartContainer.java:184) ~[BlockMultipartContainer.class:?]
    at net.minecraft.client.multiplayer.PlayerControllerMP.func_187099_a(PlayerControllerMP.java:409) ~[bkr.class:?]

Not on my end. Mekanism ships with the latest CoFH API, and it seems like another mod in your installation is shipping with an outdated copy, which is interfering. I bet you'll notice that everything works fine with only Mekanism and MCForge installed.

so about this item...

the mod that is interfering is McJtyLib

McJtyLib is a required mod for RFTools and Deep Resonance
it ships with 1.8.9R1.2.0B1 and removing the "cofh"part from it fixes the crash.

Is there a way to make mekanism have priority on loading the cofh api it needs?

Just open an issue on McJty's github and link it to this one, see if he can do anything.