Paging not working for custom loop

I’ve gone through several examples on how to do paging for a custom loop, yet I can’t get the next/previous links to show up with the following code in archive-event.php.
(The plug-in used is Event Organiser, so I suppose the post_type is registered properly.)

<?php
	$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
	$temp = $wp_query;
	$wp_query= null;

	$wp_query = new WP_Query( array( 'post_type' =>'event', 'posts_per_page' => 1,  'paged' => $paged ) );
?>

<?php if ( $wp_query->have_posts() ) : while ( $wp_query->have_posts() ) : $wp_query->the_post(); ?>
<!-- The Loop -->
<?php endwhile; endif; ?>

<?php
    	$wp_query = null;
	$wp_query = $temp;
	wp_reset_query();
?>

Next/previous links in header.php:

<div class="next-post-link paging svg">
	<?php next_posts_link('', '0') ?>
</div>
<div class="previous-post-link paging svg">
	<?php previous_posts_link('', '0') ?>
</div>

This here is the page with the code in question: http://allesaffen.sg/?post_type=event

There are two event posts, with paging set to 1, the next post link should actually show up but doesn’t. When I enter -1 all event posts are showing up as expected.