Please help: error when submitting app to App Store using Application Loader

Just clean all the things.

Check the developer/distribution certificate and mobile provision profile properly created, if not then revoke them from developer account and create all new one.

Remove all profiles from /Users/yourSystemName/Library/MobileDevice/Provisioning Profiles

Now, Export all certificates and keys from your keychain and Save them as backup for using them again.

Now install your developer/Distribution certificate first and install provisioning profile. And upload your application. This is tested way and should resolve your issue.

Check this too: https://coronalabs.com/blog/2014/05/19/apple-requires-apps-to-be-built-with-xcode-5-1-1/

Thanks.