I actually tried that before I opened the Ticket. That would be the down arrow on the DMXZone extension at near top right. When the down arrow for Install is activated, it shows it is doing something, but I can't find it anywhere in the Dreamweaver.
Dreamwearver has 2 areas that it provides access to extensions, these are, the Insert and Command on the Primary Menu Group, and the Fly out Menu. In the fly out menu group Dmxzone has a fly out on which all dmxzone extensions are store and accessed, and may also be available on the Insert of the Primary Menu Group. Where else should I look?
I purposely tested other extentions 2 loaded and the other did not. Some retured error " Server Responded with status 404"