loading posts to external webiste – redirects to blog

I just installed wordpress for this organisation I’m volunteering for. I’m just the self-proclaimed system admin of the NGO and really just an enthusiastic amateur fiddling my way forward with tutorials and trial and error, so I’d appreciate if you’d have some patience with my incompetence =)

Anyway, I managed to to a network install for our different blogs (which are separate from our NGO’s homepage and get blog posts from different tags to display on some of the pages. Everything was working fine, but suddenly today whenever you click on a site with the
<?php
// Include WordPress
define(‘WP_USE_THEMES’, false);
require(‘../blog/wp-load.php’);
query_posts (array (‘tag’ => ‘nyheter’, ‘showposts’ => ‘3’) );
?>

It’s really wierd, everything was working before and I don’t know what I did…. If i take the code away the website is back to the way it was before….
If you want to see for yourself, klick on e.g. “Engagera dig” on the homepage menu.

I’d really appreciate any help!!