previous_post_link() and next_post_link() with a custom post type?

Question

I'm on single-work.php for a custom post type called work, inside the loop.

Trying to make two links to the previous and next post.

Using this code:

<?php previous_post_link(); ?>

and

<?php next_post_link(); ?>

But nothing shows up. Am I missing something

Here is my code, very straightforward:

<?php get_header(); ?>
<div class="full" >

<?php if ( have_posts() ) while ( have_posts() ) : the_post(); ?>

    <?php next_post_link('%link', 'Next post »'); ?>
<?php next_post_link('%link', 'Next post »'); ?>

<?php endwhile; // end of the loop. ?>

</div><!--/full-->  
<?php get_footer(); ?>

Answer 1

The functions are right; set the params

<?php next_post_link('%link', 'Next post »'); ?>

<?php next_post_link('%link', 'Next post »'); ?>

Well, without seeing any of your code, it's hard to say why. Are there any PHP errors or warnings?

Update

A small example

<?php query_posts( array( 'post_type' => 'page', 'post_status' => 'publish' ) ) ?>
<?php if ( have_posts() ) : ?>

    <?php while ( have_posts() ) : the_post() ?>
        <!-- do stuff -->

    <div id="nav-single">
        <div class="left"><?php previous_post_link(); ?></div>
        <div class="right"><?php next_post_link(); ?></div>
    </div>

    <?php endwhile; // end of the loop. ?>
    <?php wp_reset_query(); ?>

<?php else : ?>

    <!-- do other stuff here -->

<?php endif ?>