My problem is that on certain pages on my website such as http://www.piranha-internet.co.uk/web/website-design.php I am been served with a 404 error in Google Webmaster Tools. However I can access the pages normally, they all have links pointing to them internally, non yet from external.
Why is this happening?
I had the same problem when I tried to include my wordpress header at the top of the code before the HTML
<?php
include('blog/wp-blog-header.php');
?>
The pages worked but Google saw a 404 and wouldn't index the pages.
Solved the problem by moving the PHP include inside the body of the HTML.
Weird problem...
Dan