I’m running into this same problem… I had an older installation of wordpress (2.0 I think) that a friend had helped me customize, and I’d not actually started using it… so a year later, I was about to get it running, and went to upgrade it, because that seemed like a smart thing to do…
now no images pop in. They upload into the gallery without any problems, but once I hit the “insert into post” button, the little floating frame gives me my site’s custom 404 not found page.
Any fixes for this?
thanks!
-jj