<b>%s Plugin</b>: WP All Import must be installed. Free edition of WP All Import at <a href="http://wordpress.org/plugins/wp-all-import/" target="_blank">http://wordpress.org/plugins/wp-all-import/</a> and the paid edition at <a href="http://www.wpallimport.com/">http://www.wpallimport.com/</a>