Error in verification

Hi There

I’ve been having problems getting my site to be verified I keep getting this message: Error calling https://www.googleapis.com/siteVerification/v1/webResource?verificationMethod=META&alt=json: (400) The necessary verification token could not be found on your site.

I’ve deleted my w3 cache plugin but it still isn’t working. Any ideas?

The url of my site is http://www.emporiumofmanliness.co.uk

http://wordpress.org/extend/plugins/official-google-site-verification-plugin/