I open up the minecraft new launcher, click play, it goes normally then the crafting bench icon appears , bounces then goes away and the launcher gives me this error:

Game ended with bad state (exit code 1)
Ignoring visibility rule and showing launcher due to a game crash
Deleting /Users/username/Library/Application Support/minecraft/versions/1.6.2/1.6.2-natives-1376850895996114000