Its this bit in the blog sidebar that seems to causing the issue.
while ($latestposts->have_posts()) : $latestposts->the_post(); ?>
<?php the_post_thumbnail( 'small-rectangle', ''); ?>
<h4><a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a></h4>
<p><?php the_excerpt(); ?></p>
<hr>
<?php endwhile; ?>
If I remove this bit it works. Not sure how to edit this bit though (its a site I inherited, so I didn’t code this bit…