Hello Ive sent a version of my app one week ago through Xcode 6 and it didn\'t have any problem. Today Ive tried to upload a new version of my App via Xcode and when uploading,
There was no one particular procedure that seemed to do it in my case: restarted router, restarted Mac, restarted Xcode, recreated profiles on developer website, viewed them in Xcode, recreated archives, attempted just validating for App Store. All of these things over and over again.
My experience has been that you should just kept trying until suddenly it works. Which is sadly not the magic button to click that I was looking for.
Possibly the fact that I managed only twice in the last dozen or so upload attempts in the morning from here in the UK (making it approx 02:30 over there in the US), indicates it's perhaps an iTunes overloaded problem.
For me Network is not allowing to upload the build as office wireless is having firewall so I had to move to other wi-fi to upload the build.
Try doing this:
cd ~
mv .itmstransporter/ .old_itmstransporter/
"/Applications/Xcode.app/Contents/Applications/Application Loader.app/Contents/itms/bin/iTMSTransporter"
Seems to be working for a lot of others - https://forums.developer.apple.com/thread/76803
Just adding another possible answer here that fixed it for me.
I was on a VPN at work. Disabling this and trying again worked.