I believe I'm reading the crash report correctly, I apologize if I'm not. This is in a custom "kitchen sink" pack, but I recently added Mek v8 to my test world to see what's new.

The error: java.lang.ClassNotFoundException: mekanism.common.tile.TileEntitySalinationController

And that's not so helpful without the crash Log: http://paste.ee/p/GAxvf

Thanks!

I can confirm this @tterrag1098

Mekanism=false in the config file (temporary solution)

Fixed via 7db7beb

Thanks tterrag!