Did you have your "local" feed favourited? I did and it caused errors since it's no longer called that. I had "local" and "beehaw" listed so I had to unfavourite "local".
I heard a "friend" was unable to load his subscriptions feed on that same instance in sync but loaded local, everything, and individual communities just fine.
Maybe try to login to that instance again? Maybe the problem is that Sync just isn't handling the access denied correctly. Viewing Local is usually open to the public, at least in my experience.