I’m trying to go back to some of the Ardupilot Basic Heli Setup documents I’ve been reading recently, and anything in the Ardupilot Copter category comes up with error 40 Not Found. The following detail says “Apache/2.4.41 (Ubuntu) Server at ardupilot.org Port 80”. I get the same message if I use a link that I placed in one of my old posts.
Other Ardupilot categories (Plane, for example) load up okay.