@Eric

Just to clarify Martin means:

http://yourdomain.com?feed=make-pdf-newspaper

When I did a wget for this url, the resulting file contained the folowing:

Warning: require(./wp-blog-header.php) [function.require]: failed to open stream:
No such file or directory in /var/www/index.php on line
17

Fatal error: require() [function.require]: Failed opening required
‘./wp-blog-header.php’
(include_path=’.:/usr/share/php:/usr/share/pear’) in
/var/www/index.php on line 17

… and the line 17 it refers to was:

require(‘./wp-blog-header.php’);

Paul