I bought Poser 11 Pro in November of 2015 as an upgrade from Poser Pro 2014. I got it on DVD rather than as a download from Smith Micro. I used it a little bit, didn't like it for a number of reasons, and went back to using Poser Pro 2014. The application and content files are still on my computer, but the program will no longer open. I can't reinstall it because my computers don't have DVD support anymore. (I am using an iMac Pro) What do I need to do to be able to use Poser 11 Pro again and get the 11.2 upgrade?