Xcode iOS organizer submit to app store yields “The archive is invalid” error

Question

I just switched from Xcode 3 to 4. When I attempt to upload an app that I have archived to the organizer, I receive this error:

The archive is invalid

Answer 1

Okay, so when you install the Xcode 4 package, make sure you have the "Unix Tools" option selected. This was the problem in my case.