I am trying to insert an image in the 3D View (Background image, Dropped image, Images as planes). Whatever the technique, I get an empty yellow rectangle. I know there has been lots of posts on this subject: I already tried to change the views, and to toggle between Perspective and orthogonal view, but neither succeed.
I have to specify that I am working on MacOS. I tried today on a PC and it worked very well.
Does anybody have a suggestion?