Thanks for the replies, I had a play around, and found an old version of Titan Panel Classic in my downloads folder (I believe its version I used this and enabled the loading of out of date addons.  This time the Titan Panel interface loaded, and DugisGuide Viewer loaded where I would expected to.. All seemed well until, I tried to change the guide I was using.. I could select one, but the selected guide wouldn’t be displayed in the viewer.