Okay. I upgraded from P12 to P13. It worked seamlessly. It renders a lot faster than P12 ever did. I had to of course relink my runtime, but apart from that, there were no issues on my new, powerful machine. I suggest you check minimum specifications and make sure especially your graphics card plus powerful enough and has PotiX capabilities. If it was already good for P12, you should be seamless.

Does that help?