Its not just IC, cyrodiil is also broke. Console people may get screwed on addons, but at least they don't have to be the beta testers for each new patch.
We are aware and are currently investigating the issue with the internal error, unable to queue for campaign. With that being said, since there is already a thread opened on this subject, we're going to go ahead and close this one down. To consolidate all feedback, we ask that you continue the discussion here.