I have the following setup

Mac OSX El Capitan
Retina 5K 27 inch
4GHc I7 Intel
32GB Memory
4GB GPU

I downloaded it from App Store a week ago. I designed 3 levels of a house from inside and out, including backyard. In the meanwhile, i added some models from your side, and tools as well, like export to HTML5, advanced rendering.

All of a sudden, i cannot get any rendering result. Rendering window comes up and loading icon spins couple of times then, it tries to render then it leaves me with a dark picture with couple of empty squares.

Tried,

- Removing the tools
- Maxing up the mem
- Uninstalling the whole app and re-installing it
- rendering simple designs

No result. The same thing is happening. Its been only one week and my whole effort is gone after trying to design a model for my customer