I've been doing this for years, so please no step-by-step instructions on how to normally add artwork. Within in the last 2 or 3 weeks, I suddenly cannot add artwork to entire albums. When I select all then "Get Info" for the entire album, I can edit anything. I can edit the album, artist, song name, etc fields no problem and they all update. However, when I drop album artwork into the square I've always done it, it won't add. Nothing happens. I drop it and the box stays empty. Strangely, if I have the artwork viewer open, I can add artwork to individual songs by dragging and dropping into that pane. But I have to do it to every song individually and that's very annoying. Anyone know why this might be happening? It isn't just one set of files, its ALL my files. But songs previously with artwork retained it with no problem.