I got this error after editing one of my panel. I backed out to the MY PANELS page it was no longer listed there at all. It was a small panel so I moved on to editing my home panel...that took quite a while to get setup...same thing happened. I still have links to these GHOST panels in my other panels..but clicking the link gets me the error above. I believe at one point the error also said "this panel is empty" but I cant seem to get that error again.
Customer support service by UserEcho