Thanks Rob, but is that where I take existing users to do an update, like when you do an update after seeing an update count on an app tile and it automatically starts the update download when you click it?
BTW I put you in the shoutouts section of my new WinRT app RecNote for the ton of help you gave me. If you have a blog or site let me know and I'll add a link to it:
http://recnote.com/AppX/credits.cshtml
-- roschler