So I uninstalled Dviewcam v5, deleted the contents and folder for Dlink under "Program Files (x86)", restarted the server then re-installed the latest v5 software.
Same result, no video on server display (via RDP).
However, Dviewcam picked up the configuration data from somewhere so I did not have to add the IP cameras, they were already there when I opened Main Console.
So I'm guessing the configuration data is stored somewhere else on the server. I'd be grateful if someone would tell me what other files/folders I need to delete (and if a file(s), then also where are they located) before re-installing so I can add the cameras "from scratch"?
Thanks - Mike