Child Themes

If you are using a child theme, you must put your custom feed files in the parent theme’s folder. As a workaround, you can edit the plugin code as below:

function load_feed() {
    // check if template exists in theme directory, use default RSS2 template otherwise
    if (file_exists(TEMPLATEPATH . '/feed-' . $this->slug . '.php')) {
        load_template(TEMPLATEPATH . '/feed-' . $this->slug . '.php');
    } elseif(file_exists(STYLESHEETPATH .'/feed-' . $this->slug . '.php')){
        load_template(STYLESHEETPATH . '/feed-' . $this->slug . '.php');
    } else {
        load_template(ABSPATH . WPINC . '/feed-rss2.php');
    }
}

function template_to_use() {
    if (file_exists(TEMPLATEPATH . '/feed-' . $this->slug . '.php')) {
        return('feed-' . $this->slug . '.php');
    } elseif (file_exists(STYLESHEETPATH . '/feed-' . $this->slug . '.php')) {
        return('feed-' . $this->slug . '.php');
    } else {
        return('default');
    }
}