[Plugin: Post Affiliate Pro] error trying with shortcode

when I put the shortcode on a page it comes out with this error:

Catchable fatal error: Argument 1 passed to Pap_Api_Affiliate::__construct() must be an instance of Gpf_Api_Session, none given, called in /home/inter212/public_html/eztest.com/sb2/wp-content/plugins/postaffiliatepro/Shortcode/Affiliate.class.php on line 34 and defined in /home/inter212/public_html/eztest.com/sb2/wp-content/plugins/postaffiliatepro/PapApi.class.php on line 4522

http://ww.wp.xz.cn/extend/plugins/postaffiliatepro/