This is kind of a silly question but here goes—when I get a .dwg file and hit open, it automatically opens in Illustrator, opening in Rhino is not even an option if I try to pick the application to open the file Am I missing some preference switch to make this happen? If I drag the file to desktop and use Rhino to open—it’s fine, just an extra step.
In Finder, right-click on a DWG-file, doesn’t matter which one, and select Open with > Other… A dialogue will pop up, which let’s you select the application to open the document with. Before hitting Open, check Always Open With!