re-uploading the wp-admin and wp-includes files didnt fix it :-(
I was hopeful.
I don't get any error messages.
In fact, QuickPress says "Loading...." while he whole dashboard page is loading but then...after a few seconds, it fails. Instead of the QuickPress window for text & controls, "loading..." disappears and all that there is - is a thin white line.
This is what the WP-Admin ... admin-post.php code looks like
but maybe it is something else...
* WordPress Administration Generic POST Handler.
* @package WordPress
* @subpackage Administration
/** We are located in WordPress Administration Panels */
if ( defined('ABSPATH') )
require_once(ABSPATH . 'wp-load.php');
require_once(ABSPATH . 'wp-admin/includes/admin.php');
$action = 'admin_post';
if ( !wp_validate_auth_cookie() )
$action .= '_nopriv';
if ( !empty($_REQUEST['action']) )
$action .= '_' . $_REQUEST['action'];