Hello, we have on Czech Xbox LIVE maybe 3 advertisement on Halo Waypoint, but we dont have installation file. Please put in on the Czech Xbox LIVE 
Thank you very much
Have you downloaded the file from the marketplace? If so, you need to go to Quick Launch to find it. It is no longer in the Community section.
No… we dont have this item on czech marketplace http://marketplace.xbox.com/en-US/Product/Halo-Waypoint/66acd000-77fe-1000-9115-d8024d5308ce