Blank Page – template – no idea why

Hi,

The issue is here:

http://www.citirecruitment.com/?page_id=20

This page displays all the blog posts – and uses a page_blog.php template file. It works fine. I then have different sub-blogs that only list specific catagories such as:

http://www.citirecruitment.com/?page_id=113 – Mining Blog
http://www.citirecruitment.com/?page_id=117 – Recruitment

To do this I made a copy of the page_blog.php and renamed it to page_blog_mining.php and point the posts to that specific template. In the normal blog template file it uses this:

Normal Blog Template:

<?php
$temp = $wp_query;
$wp_query= null;
$wp_query = new WP_Query();
$wp_query->query('showposts=10'.'&amp;paged='.$paged);
?>
<?php if ($wp_query->have_posts()) : while ($wp_query->have_posts()) : $wp_query->the_post(); ?>
<?php global $more; $more = 0; ?>

And to show specific catergories e.g. Mining Blog Template

'$temp = $wp_query;
$wp_query= null;
$wp_query = new WP_Query();
$wp_query->query('showposts=10'.'&paged='.$paged);
?>
<?php query_posts('category_name=mining&amp;showposts=10'); ?>
<?php if ($wp_query->have_posts()) : while ($wp_query->have_posts()) : $wp_query->the_post(); ?>
<?php global $more; $more = 0; ?>

This worked fine until only a few days ago – now when you click the sub-blog file eg:
http://www.citirecruitment.com/?page_id=113 – Mining Blog

It goes to a blank page with no errors or source code. No files have been changed (for 4 months) and this worked great until a few days ago. I’m at a loss to troubleshoot this because i can’t view any errors – there is no point of reference. I deactivated any recently installed plugins – which had no effect.

Is there a error log file i can look at – i just don’t know why its stopped working now….

thanks in advance.