I am not a developer - this was a public beta - but Apple removed my question from the usual forum and said I had to post it in the developer forum.
I have 6 updates waiting in the Mac App Store on my MacBook Air. The site never fully loads, ie if I go to Featured, I can see apps but not their logos.
When I select Update or Update All, nothing happens. Sometimes there will be a bar and it will sit at 0MB out of 729MB (or similar) but then I get a message that the request timed out.
All the apps that require updating are Apple - such as iMovie, Pages, etc. VERY frustrating - my wifi works but the Mac App store doesn't, even when I try with Hotspot connection. Running El Capitan 10.11 Beta and can't update to run anything else!
I have reinstalled El Capitan but the problem persists.