title: Call to undefined function get_network_option()
body: <p>I have a WordPress blog that I admittedly haven't been looking after/not upgrading the plug-ins etc I'm regularly emailed about - and now it's down.</p>
  
  <p>No matter what page I go to, I get:</p>
  
  <blockquote>
    <p>Fatal error: Call to undefined function get_network_option() in /home/gfptlkxn/public_html/blog/wp-content/plugins/wordfence/lib/wordfenceClass.php on line 747</p>
  </blockquote>
  
  <p>I've done a bit of googling on this and it seems a common problem, but more for people making changes/trying to use certain features etc - I've not changed anything/not doing anything fancy - it's just a simple blog.</p>
  
  <p>So I figured maybe I could just go into my login page for WordPress, have a dig around, upgrade some plugins etc as a starting point.</p>
  
  <p>Problem is, even my login page presents this error.</p>
  
  <p>Any ideas where to start please?</p>