When using Xcode 7b5 to build my app that contains a Today Extension I cannot create a valid archive. When I make an archive the build succeeds and then in Organizer it show
I just confirmed today that this was a CocoaPods issue for me, specifically 4021. I tried as the other users on the issue and removed "copy pod resources" from my today extension target. Once that was removed I was able to package up an archive successfully in Xcode 7 Beta 5.
Hopefully this still works in the next beta and the GM...
UPDATE 9/22: This is the answer if you are using 0.38.2 of CocoaPods their latest Release version as of 9/22/2015. I was able to submit my app to the app store using Xcode 7 GM using this method.