Minecraft Forums

When you create a pyramid in 1.4 (9x9) and you don't select a buff, you disconnect and your world becomes un-usable.

Here is a fix I found.
ALWAYS MAKE SURE TO BACK UP YOUR WORLD, I AM NOT RESPONSIBLE FOR ANY MORE DAMAGE.

1.) Go to http://mc.42nex.us/ and find your world's seed.

2.) Create a new world with the same seed, map type, and game mode. The Name can be anything.

3.) In your old corrupt .minecraft/saves/(worldname), delete level.dat.

4.) In your .minecraft/saves/players, delete (yourPlayers).dat

5.) Copy your the level.dat from the new world you just created INTO your old corrupt world.

6.) open the minecraft Launcher --> Options --> Force Update.

7.) Congratulations! Your world is now usable again.

its make world usable again not fix for pyramid ._.