I have an application which works fine on Xcode6-Beta1 and Xcode6-Beta2 with both iOS7 and iOS8. But with Xcode6-Beta3, Beta4, Beta5 I\'m facing network issues with iOS8 but
I was facing the same issue,
I have enabled Network Link Conditioner for slow network testing for the app. That was creating this error some times,
When i have disabled it from Settings > Developer > Network Link Conditioner, it solved my problem.