Get Cannot modify header with new shortcode

Hi, sorry, same error.
I get it when I update the page. If I remove the plugin, save the page with the shortcode, activate the plugin and show the page everything is there but totally without css.

EDIT: Off course I get the same error when I’m reload the page frontend.

Thank you!

Well, its getting better 🙂

Now the [starbox] work as expected. But not the [starbox id=X]. No error message, just looks strange, listed, like its without CSS. Tell me if you want a screenshot.

From earlier post, the PHP solution with <?php echo starBoxShow( X ); ?> works, and if i put the code (Listed below for reference) in my functions.php file and then <?php echo starBoxShow( <ANY NUMBER> ); ?> in a page template, then the [starbox id=X] works on the page with this template.
Tried to put 0 in the php, then the pageauthor shows and all the [starbox id=X] works great.

I am very thankful for this support! Fantastic! 🙂

add_action('init','starBoxCustom');

function starBoxCustom(){
        if (!class_exists('ABH_Controllers_Frontend'))
            return;

        ABH_Classes_ObjController::getController('ABH_Controllers_Frontend')->custom = true;
}

function starBoxShow($user_id) {
        if (!class_exists('ABH_Controllers_Frontend'))
            return;

        ABH_Classes_ObjController::getController('ABH_Classes_Tools');

        $theme = ABH_Classes_Tools::getOption('abh_theme');

        $str = '';
        $str .= '<script type="text/javascript" src="' . _ABH_ALL_THEMES_URL_ . $theme . '/js/frontend.js?ver=' . ABH_VERSION . '"></script>';
        $str .= '<link rel="stylesheet"  href="' . _ABH_ALL_THEMES_URL_ . $theme . '/css/frontend.css?ver=' . ABH_VERSION . '" type="text/css" media="all" />';
        $str .= ABH_Classes_ObjController::getController('ABH_Controllers_Frontend')->showBox($user_id);

        return $str;
    }

The login_name works! And thats good enough for me 🙂 Thank you very much!
5 star coming..

Here is the link: http://mroffshore.se/om-2/