Waypoint XBL update fail

Whenever I try and access Waypoint on XBox Live, I get an update prompt which, when clicked asks me to download Waypoint again, understandable, however, when I do download it, nothing happens, next time I try and access Waypoint it makes me download again. Anyone else have this problem? Any solutions? I can download it as much as I like and it keeps prompting me.

delete it and re-download from the dashboard. I had the same problem.