Can't get pagination to work, gallery made from custom post types inside a post.

Hi all. I have a wp problem that is driving me nuts and I have to get the job done by monday, so any help would be greatly appreciated. I dabble in php but never learned it properly, and now it’s showing ??

The thing is, I have a working query inside the post template, showing five elements. This works well, and it’s paginated, so if I add
&paged=2
to the url in the browser it takes me to the next page of elements, no problem. The problem is, I can’t for the life of me get the pagination to show. The code is as follows:

<?php
		$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
			$args = array(

				'order' => 'ASC',
				'orderby' => 'menu_order ID',
				'post_type' => 'attachment',
				'post_parent' => $post->ID,
				'post_mime_type' => 'image',
				'posts_per_page' => 5,
				'paged' => $paged,
				'post_status' => null
			);
			$attachments = get_posts($args);
		?>

And then, to show the pagination:

<div class="pagination">
<?php paginate_links(); ?>
</div>

Any idea what I’m doing wrong? Thanks a lot.