Hi. I know this has been brought up a few times before, but there appears to be a problem with the "Meet Vivec" quest.
I have become the Hortator of the three Great Houses, and been named Nerevarine by the four Ashlander Tribes. I returned to Nibani Maesa, which turned out to be a waste of time since the "fourth trial" and "fifth trial" dialogue options were greyed out. Instead, I proceded directly to Danso Indules, who gave me a key to the Archcanon's office (I noticed that I did not receive a quest update here - merely got the key and that was it). So, I went in to talk to the Archcanon, and he said something along the lines of "you are an evil dog, blah blah me nevah believe you, n'wah" (well, not really, but he was adamant that I would not be seeing Vivec).
I thought this was because I had killed Ordinators before (the ones in the shrine for the Ahemmusa quest - they deserved death for being s'wits), but I was annoyed because I could simply do nothing to continue. The main quest was essentially ended, right there.
I got around this by typing in the console command "setstage fbmwMQ12 30", and then unlocking Vivec's door with the console. This worked, as I spoke to Vivec, got Wraithguard and I am now merrily on my way to Ghostgate.
I know that this has been reported before, but I just want to bring it back to attention, since something must be wrong somewhere... something obscure...
I had a look myself, but I am unfamiliar with quests in the CK, and didn't want to cause any further damage.
Anyway, if anyone else has had this problem with the Archcanon, just type in "setstage fbmwMQ12 30" and you should be good to go.

Please, for the love of
Please, for the love of Almsivi, stop using console commands if you run across any bugs or what you think are bugs. The quest didn't update because it was probably at that stage already for whatever reason. If that was the case the last quest update was probably about the archcanon being in his private quarters and so forth.
You had to talk to Saryoni about "Temple's Doctrine", if you killed any Ordinators you will have the option to apologize. If you've used console commands in the main quest in the past, then no wonder you're not getting the right topics. Quests include much more than just a few Quest Stages that you can set in the console.