iOS app submission error: an error occurred while processing the json request

Question

I'm trying to submit my app the the App Store using Xcode 5.1.1, but I keep getting this error message during validation:

 an error occurred while processing the json request

That's it. No extra information. On one of my tries I also got an error saying that the connection was lost. I tried restarting Xcode as someone suggested in another post, but it didn't help. Is this an Apple server issue?

Answer 1

90% of the time it is, yes. Don't worry and resubmit it a couple of hours later.

Or use Application Loader.