I tried to install this mod, but i have a problem: there is no META-inf folder in my minecraft.jar.
So i copied mod files in minecraft.jar, run the game and got a black screen without any error messages.
I'm locking this thread because it's generating a lot of confused, unnecessary posts. You can find Optimine Updated for 1.4 Here: viewtopic.php?t=264418&f=1032
To the creator of this mod: If you update the mod, please shoot me a PM and I will unlock the post ASAP!