Yes. It did work. For some reason the software installed on my D drive, which is a standard hard disk as opposed to the C drive, which is SSD. The gstreamer directory does not show up in either Program Files directory. I moved the gstreamer directory to the C drive, changed the pointer in PM6 preferences and it still works. There appeared to be no setting for this in the installation process, which almost all other programs allow. A non-issue if you have no additional hard drives in your system.
However, there has been one side effect, but I do not know if it is from gstreamer or moving to build 2818. My contact sheets now take a very long time to open - 5 to 10 seconds.