Go into wp-config.php and change define('WP_DEBUG', false); to define('WP_DEBUG', true); . Also, install Andrew Nacin's Log Deprecated Notices plugin. More Solution plugins - WordPress stats API key in WordPress plugins - Integrating WP as a CMS with a Bug Tracker in WordPress hosting - What issues would you face if you use Nginx in WordPress WordPress 3.0.1 Auto Update Problem in WordPress Test to see if jQuery or Prototype is queued by another plugin? in WordPress Reffered: https://wordpress.org/
