If I choose "build and archive" from XCode, the Organizer is launched and I can see a list of my archived applications. I have 4 different applications (with several archives each), but the icon that's displayed in Organizer for one of the apps is missing -- there is a question mark icon instead. The app does have an associated icon and it validates and submits to the app store without any issues.
Why isn't Organizer picking up the icon correctly and how do I fix it?
Not a bug, I think you need to have at least one for Iphone and a bigger one for ipad (although my app is only designed for iphone...). I replaced the "icon file" key with "icon files" in the plist file and put one 52x52, one 72x72 and also one 114x114.