This is what happens when i try to launch it.

Client> 2013-07-01 11:55:36 [CLIENT] [INFO] Setting user: andreyisfat
Client> 2013-07-01 11:55:36 [CLIENT] [INFO] (Session ID is token:a2e7b6db1e634bd9be98b4a3447010db:32e69f32b85d41258a383f89efe4d69a)
Client> Invalid memory access of location 0x0 rip=0x0
Client>
Game ended with bad state (exit code 139)
Deleting /Users/minecraft/Library/Application Support/minecraft/versions/1.6.1/1.6.1-natives-1372704934778802000