I've been playing through Morrowind, and I've encountered a problem in the Main Quest. A while back, I made it to the point where the Ashkhan of the Urshilaku told me to find the other Ashlander tribes and have them proclaim me Nerevarine. I decided to part from the MQ, here, and do the Telvanni quests. After finishing that faction, I returned to the MQ and did all of the Ashlander Nerevarine quests. I returned to Nibani Maesa, first, instead of the Ashkhan and she told me that she was concerned that I hadn't fulfilled the prophecies and that Tholer Saryoni wants to speak to me, out of desperation. I'm not sure why she is saying this, I've messed up somewhere, but I don't know how.. I spoke to the Ashkhan and he didn't really give me much more instruction than the earlier references to making myself Hortator. From my memory, I knew that I needed to speak to the respective Great House councilers, so I started with Crassius Curio, more or less he told me the exact same thing that the Wise Woman of the Urshilaku did.
Checking with the Construction kit, shows that they will give me this greeting if the variable "B8_backdoor2" is in function.

Great.

I was previously a vampire, ingame, running both Vampire Embrace and Vampire Realism, but I cured it a while back. I don't see how this would effect anything, as the vampire backdoor quests shouldn't be in play anymore. Although, I do recall, that when I cured vampirism, some of the vamp spell effects were still on my character (sun damage, vampire bite on/off (a Vampire Embrace scripted spell). All of this I removed via console commands. Could there still be some functions of vampirism lingering on my character?

I have various mods running (Mephisto's Cap Remover 1.2; the 2011 graphical update overhaul; etc), but none that directly meddle with the main quest, as far as I know.

Can someone PLEASE help me? Obviously, the script "B8_backdoor2" is running. I am not tech savvy enough to create a fix for myself via the construction kit, save for maybe removing the variable/function requirements for journal updates, as I have done before when the Mage's Guild failed to recognize that I was no longer expelled. I really wish to finish the main quest the way I am supposed to. I don't want to skip all these quests and jump to getting Wraithguard from Vivec.

Thanks to any who read this.

I found a workaround for myself, so if a mod sees this, feel free to close the topic. Unless someone else has a similar problem and wishes to seek help.

It's a bug, the dialog can even appear with a few NPCs after the main quest is finished. Ignore it.

try the patch?
http://etherealsoftware.com.au/patch/