http://base.liveperson.net/hc/s-5296924/cmd/kbresource/kb-9100243508589702954/view_question!PAGETYPE?sq=security%2Bwarning&sf=101113&sg=0&st=647120&documentid=397588&action=view
Article above addresses this issue, but it does not solve it for me.
Our image we want to use is hosted on an https:// server however I get the warning error.
I don't want to post the URL in the public question forum, but I am happy to provide it in a private message if that will help anyone with a solution.