Game launches ok w/ no unusual errors. When attempting to load a singleplayer world it gets all the way to "Preparing Spawn Area: 98%" then crashes. The launcher also crashes at the same time. The same thing happens when I try and create a new world.
Environment
Early 2011 MacBook Pro w/ Intel HD Graphics 3000 512 MB
Java(TM) SE Runtime Environment (8.0_74-b02) (build 1.8.0_74-b02)
What's the exact mac version you're using?