Creative Zodiac - Portfolio & Blog Wordpress Theme

As stated in documentation, you have to have a page called “getpost” with assigned “getpost” page template (choose from the selectbox in right sidebar in wp-admin when editing a page). You can of course hide this page from navigation by inserting the page ID into Theme Options->General->Exclude

Make sure you also have selected the right path to your “getpost” page in Theme Option->General->Getpost page