I am trying to upload a new version of my iPhone app but I am getting following error:
unable to validate application archives of type 0x0
Apple does not allow developers to upload apps using beta versions of Xcode. Xcode 6 is now out on the App Store, and the GM can also be downloaded from their developer site.
Do not submit apps built using beta software, as beta versions of Xcode, Operating Systems, and SDKs are for development and testing only.
Source: Apple's Dev Site