I started modeling in Ray Dream Studio years and years ago, I also have updated as often as possible. I run the PC version. I was a bit nervous about the expense of C4 Pro initially but it has given me some tools I didnt have before. All in all I think it was worth it. I havent been able to get the networking to work. My main rendering box seems unable to find the other node on my network. I even put both mach9ines in the DMZ on my network to see if that helped. I wish I could get it to work, I could the time savings.