carbashop on "[Plugin: WooCommerce - excelling eCommerce] error CI_WooCommerce_Widget_Recent_Products"

WooCommerce plugin generate error:
Fatal error: Class 'CI_WooCommerce_Widget_Recent_Products' not found in /home/simplesa/public_html/wp-includes/widgets.php on line 324

thanks for your reply
regards

http://wordpress.org/extend/plugins/woocommerce/