I Have IC2, Buildcraft,Optifine,and Recipe book installed and it worked fine for about a week. Then the water in my river disappeared when i put coal in my macerator. It didn't get destroyed it was just invisible. Then when i was mining i hit a small well lit cave, heard the burning sound and i died. must have been invisible lava because i saw all my stuff burn.
Invisible lava is REALLY annoying and dangerous so please help!
Weird thing is the buildcraft oil doesn't disappear.
Now everywhere i go water and lava are invisible even as an item.