Thank you so much @lukodp, this worked perfectly!
I was a few days away from launching a new site, and finding this header issue so close to release was not pleasant! You saved me!
Thank you everyone who participated in this thread!
Thank you @wpwhitesecurity for your prompt reply – Would you please be able to provide some more details for us? Since we are using this very valuable plug-in of yours for security reasons, you could see it’s a little troublesome to see a message like this appear with no clear explanation. I’ve been looking through my WordPress back-end files to try to pin-point the cause fearing it was malware and it wasn’t until I came to your forum to look for another piece of information was I able to find anything on this update. Your help is greatly appreciated!
Bobby
