I just noticed that when someone tries to edit an image that hasn't upgraded to the latest version they get a message asking them to upgrade their site and has Concrete5 plastered all over the message with links back to Concrete5's website. This shows up even if you have the site set to white label to another company.

Does anyone know how to get rid of or edit this page?

"Uh-oh! It looks like Google has shut Picnik down.
But there's good news:

You can upgrade to the latest version of concrete5
for basic image cropping, scaling and rotating right in your favorite CMS!
Learn more about upgrading your site!

As always, make sure to backup your site before you upgrade.
Learn how to back up your site Learn more about concrete5."