A word of caution: avoid placing content into the Program Files folder if that is where your primary Poser app is located. Window's UAC will interfere with runtime access and cause unusual behavior. In addition, UAC may create a virtual location for your content, which can further complicate usability. Install content into external runtimes within the Public Document folder and link them accordingly. I share runtimes between Poser 11, 12 and 13 without any problems and each Poser version can coexist and operate at the same time.