I keep getting the following error screen when I attempt to post to Facebook from Movie Maker. And it happened in the initial setup process for Windows Essentials 2012 as well.

The error message says:

"Given URL is not allowed by the Application configuration: One or more of the given URLs is not allowed by the App's settings. It must match the Website URL or Canvas URL, or the domain must be a subdomain of one of the App's domains."