After i updated my MC to 14w07a in all of my worlds all of blocks are invisible and most of the mobs too. I am able to see blocks in my inventory but i in the world i only see the wireframe of the block when i point at it. Some stuff is still visible though: dropped items, me holding items, falling sand etc. I suspect (and if that is true im sorry bothering u with this bug) my AMD update to mess this up but after i updated my graphics driver i played on the 14w06b snapshot and it was just fine. But after now when i updated all things are not visible! First of all i downgraded it to 14w06b again. And suprised found that even newly created worlds are still block invisible (even in 1.7.4). Did MC mess up all of my mc versions? :S