I do have a couple of add-ons installed- like No-Script, and things have worked fine. I haven't made any changes to add-ons or anything for a long time. Now I just noticed yesterday that right clicking on an image and choosing Copy Image works the same as Copy Image Location. So, when I choose Copy Image, then bring up Illustrator and hit ctrl-V to paste, the URL is pasted instead of the image. Copy Image Location seems to work as it should. I was using the feature the day before yesterday, and it worked just fine. I'm not sure what has changed.