Problem with Google publisher settings | Troubleshooting All in One SEO Pack Pro | Support | Semper Plugins

I’m trying to get All in One SEO to insert the publisher metatag on the home page, so I’ve enabled advanced authorship options and Display Publisher Meta on Front Page, and inserted the publisher url. When I then load the homepage in a browser, there is this message at the top:

Warning: in_array() expects parameter 2 to be array, string given in /home/pwellsbu/public_html/wp-content/plugins/all-in-one-seo-pack/aioseop_class.php on line 1480

It’s weird because I’ve used All in One SEO on another site with exactly the same settings and it’s fine. I’ve tried removing and reinstalling it but it still happens. Any idea what the problem is? The site is http://www.builder-midsussex.co.uk but I can’t really leave it with the setting enabled.

thanks