Illustrator 25.4.8, unable to open png files since updating.
Since I updated to the latest version of Illustrator (25.4.8) yesterday that will run on my Mac OS I can no longer open PNG files. If I choose 'open' I can see the files I want but pressing 'open', nothing happens. I've restarted the app and my Mac, no difference. My normal workflow is to screenshot reference images and leave them on my desktop, then just open in Illustrator. Now I have to convert the PNG to a PDF to be able to open it. Any ideas why?