Addendum: Reloaded the actual page and the WordPress publisher, and things actually appear to work. Also upgraded to 3.9.1.
This has happened to me before. What seems to happen is when I initially enter WordPress, it crashes, delivering an database error message, along with links to either repair or repair and optimize. The site itself goes down as well. Attempting to repair and optimize the database yields the output above, but refreshing brings back both WordPress publisher and the site.
