If you’ve come across an error like this,
Sorry, you need to enable sending referrers for this feature to work.
It might be just one of the default plugins enabled (someone said this while I Googled a solution) but the problem I found was my Norton Antivirus and just disabled it before publishing. Other solutions if you’re not using any Norton product can be further found at the Enable Sending Referrers support thread.
There’s a really long explaination to this whole dilemma so it’s best if you read them at the support thread.