This worked fine 2 days ago using the exact same archive and provisioning profile (selected from the organizer). Anyone else seeing this? I haven\'t updated Xcode, so it see
I have used bagusflyer's workaround to submit app, but finally I found out how to solve it permanently.
Here is the solution:
Accept new changed terms and condition from apple developer account. (Just like Sandeep said)
Go to here to generate new provision profiles, for App Store & AdHoc (Tutorial)
Double click new provision profiles you downloaded to install them, and then XCode will never crash.
The problem is caused by XCode 6.0 does not handle provision profile migration properly. Developers should regenerate provision profiles for XCode 6+, but Xcode 6.0 fails to display this error message properly and crashes. (If you use XCode 6.1 Beta, it will display error messages for you, no crash. Then you will know that the problem is caused by "invalid"=="legacy" provision profile.)
After that, you can submit app and export Ad Hoc distribution for Testflight.