Hello. After reading this thread I too had the same issue with the directories so I changed them from 777 to 755 and 666 to 644 abd I'm able to see everything except when editing the settings for any gallery. When I'm editing the settings the lower preview pane is displaying the 500 error with an additional 404. I changed the permissions on the "temp_editing" directory and files as I mentioned and they keep going back to 777 and 666. Everything is working great! Any suggestions? Thanks!