I fixed it! For me, I was using an add on domain. I had registered bibledoctrinelinks.org but was adding it to my server at dartscape.com….running two websites off of the same account. The fix is to go to your web hosting CPanel and the Hotlinks Protection section, and then add the add-on domain to the “Urls to Allow Access”. Once I did that, the images showed up in the headers, in the admin area, etc.
Bluey – I hope this solves your problem too.
Dart Humeston