I’m getting the streaming error, but only in Zuldazar. First my paladin dc’d on the loading screen when I tried to take the portal from Boralus for the new ZG profession quest, and I still can’t log in to her - every time I try I immediately get disconnected with this streaming error message.
I did the quest again on my hunter and travelled via boralus but this time to Nazmir. All good so far, so I mounted up and flew south. I was able to enter the Zuldazar zone just fine, but as soon as I entered the “city” space I immediately got booted off and same thing - unable to login, constant “streaming error” messages.
I ran scan repair, which crashed and told me it was broken but still installed something (?), then tried again - nope, both characters immediately dc’d with “A streaming error has occured. (WOW51900322)”
I had this problem with 10.0.5 so I’m now doing what I did there and completely uninstalling WoW and the bnet client to redownload from scratch. I’ll update if this works, but I gotta say, not really liking this latest patch-day ritual, blizz, really hoping you can work out what’s happening with it before 10.1.
edit 9 hours after original post: uninstalling both game and bnet launcher and then reinstalling both worked for me.