Thinking of the free upgrade to Mac OS Sierra. Who knows if Carrara with work with it? I recently bought Strata 3D, and while they have done everything possible to make that program user friendly, it's just not Carrara, and I find I can't be nearly as productive as quickly. I'm used to thinking about art, not struggling with an interface. And so far, the renderer has nothing on Carrara's. Come on Daz!