The "Read more" button shows up now Daniel,
However it doesn't work for me for some reason
When I click it the page closes and I am brought back to the default "Control Panel" landing page. I think this is more to do with an issue with my site though as I get the same problem even when trying to use the "Read more" in an article.
I do have a work-around for now though, just add the "Read more" in html view and it works fine. Just add this line in <hr id="system-readmore" />
and anything you want on the Read More page after this line.
Probably an issue with a plugin that I have installed or something.
Thanks for your help...