I also just installed the latest 11.3.813. I first did an uninstall by running the uninstall.exe from the current Poser folder. On reinstall, I left the option checked to install the Support files so it did that. I did not have to run the PoserSupport.exe file separately although I did download it and it was in the same folder as the Install Poser 11.exe file when I ran it. I then uncompressed all the content files I downloaded with the latest install. I uncompressed all those content files into separate folders under a parent folder I called PoserRuntimes. In Poser, I added this folder to the library 05_LegacyContent_Poser-Nudes. I am able to add figures like Paul and Pauline to a scene.