If Illustrator is closed, I can double-click on a file name, or a smart object in photoshop, and the file will open in Illustrator. If Illustrator is open this is not possible. My workaround has been to open the file from within Illustrator (tedious, but doable). However, there is no workaround to open a photoshop smart object. So I literally have to close Illustrator each and every time I want to open and edit a smart object. At first I thought this had to do with having objects on the clipboard, but even after clearing the clipboard this is still an issue. This ongoing glitch is hampering my productivity in a very big way.