I try and load my survival world, and it goes to the 'Generating World, Building Terrain' menu and about .5 second after Minecraft crashes and sends me to my home screen. Minecraft is still open in multitasking menu, when you click on it, it brings you to the 'play' screen.
EDIT: My creative world loads fine
EDIT 2: Fixed in 0.11.1
I have the exact same issue. I am able to create survival and creative worlds. I am able to open creative worlds. I am not able to open my only survival world. It was working on 10.5.
**Update
MC crashes when I open a survival world that I created in 0.11.0.