I’m in the same position … No “save” or “publish” button, plus I can’t change the screen options to see if 2 columns will work.
Reinstalled wp-admin and wp-includes, deactivated all plugins, repaired database, cleared cache (and browser cache), not running Suhosin, and still can’t save, publish or change the screen options on the “Add New Post” page.
Any other suggestions? I appreciate the help!