custom post types pagination problems.

Ok, this is just annoying not to be able to find a solution for days already, i just cant find it. After creating custom post types and implementing basic pagination it just wont work for custom post types . I am not even starting another thread about that permalinks wont work as well…

The funny thing i noticed is that pagination starts working only if you add real, normal posts.

Here is the code and sorry if that will just sound like another stupid question to you:

<?php
  $temp = $wp_query;
  $wp_query= null;
  $wp_query = new WP_Query(
	array(
            'post_type' => 'portfolio',
            'posts_per_page' => 1,
            'paged' => $paged
        ));
  while ($wp_query->have_posts()) : $wp_query->the_post();

 ?>

loop content goes here

 <?php endwhile; ?>

<?php if(function_exists('wp_pagenavi')) { wp_pagenavi();  } $wp_query = null; $wp_query = $temp; ?>