Bridge not opening files in Illustrator
Sorry to see this issue has been showing up in the forum since 2018: doesn't look good!
Anyway, fwiw, I'll mention that when I right-click a thumbnail in Bridge and select Open with … Illustrator, Illustrator opens but the file doesn't. Stranger yet, the file appears in the Recent list.
I'll mention this in the Illustrator forum as well, to cover both ends of the problem.
