Free Movies Box has been updated to version 1.2.5.3 (Windows 8) and 1.2.6.3 (Windows 8.1).
Download latest version from here: http://apps.microsoft.com/windows/en-us/app/free-movies-box/30e55063-2c47-49a7-a99d-26bc87466d47
Or just update your app if you have it already installed.