Ajax call issue

Hi I have one issue when I’m trying to show older posts using ajax. I use function wp_gdsr_render_article to show rate stars on those posts but than i get ajax issue because object f in that function is empty, don’t know why. Is there any function to call for initialization plugin again on ajax call or what to do?

Thanks

http://ww.wp.xz.cn/extend/plugins/gd-star-rating/