When I switch to Twenty Fourteen, I lose the “portfolio” pages where the galleries reside.
I am using Avada by ThemeFusion, not Twenty Fourteen, but had the same problem with the default gallery.
Tried deactivating all plugins:
Fusion Core, Jetpack, Revolution Slider & WordPress Importer
But had same issue. Maybe tied in to the OS?
Update:
Just tried from a desktop Mac OS_10.7.5 and was able to update the gallery.
On a MacBookPro OS_10.6.8. I cannot edit gallery.
Same problem here. Was working fine, then wordpress updated to 4.0 and I cannot update gallery. Tried manually updating 1 image at a time through “text” mode. Worked in preview mode, but when updating page got :
“The requested URL /wp-admin/post.php was not found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.”
