Hi, thank you for your prompt reply. On the homepage of http://www.pennychandler.com.au the circles Blog and Shop are custom circles as per your instructions, all other circles are normal posts. When I click on the Blog or Shop circles using Chrome I get the message as in my first post of the thread, link code already use, when I try the blog and shop circles using iPad I get about:blank. The Blog circle is supposed to link to another wordpress blog and the Shop circle links to my Etsy shop. I created a custom field link as in the guide instructions.
I did try to delete the content-home.php as in your instructions but then I lost all of the circles apart from the two custom ones and they didn't link to anything so I re pasted from original Spun content-home.php. I followed all other instructions in your guide to custom circles. Hope that all makes sense.