Purchased World Book 2004 with a new Mac last year. The content update function never worked at all, despite all the hype included in the product about updates. When I visit the MacKiev tech support page, I was startled to read that World Book has given up on providing the service (annoying since the message pre-dates my purchase), but MacKiev, out of it's own goodwill, is running an update server. All I have to do is download an install an updater. I guess the misspellings should have tipped me off. It still does nothing. Don't buy this product.