I've killed the Ancients on Terror but Dark Portal isn't opening (yes I have the skill on my Soulstone Shard).

Any ideas? Should I just kill the Ancients again?

EDIT, left game, did it again and the portal opened. Must have been a bug/error.

That would explain! Thank you!

I was already playing on The Sin War, yes.

I was disconnected while away from the computer and now it will not connect.

I installed the update fine, started playing.
Stepped away from the PC and when I came back, I had a popup:

Unable to connect to Battle.net.

I get it when trying to connect to The Sin War.