In the mod Great House Dagoth after Dagoth Ur tells me his side of the story of what happened with Nerevar and the Tribunal and how he made the Ash Vampires, he tells me to get the ring at the door and head into the heart room. He says he will meet me and he disappears. My issue is that from then on he's gone. He never shows up in the heart room. Eventually I just got frustrated and triggered the script to turn me into a Heartwight along with the appropriate journal entries and now I'm onto making my citadel, but Dagoth Ur still only tells me his life story again if I console him back, but now he's not disappearing. At least I can still talk to staue him, but I get the feeling I'm going to be consoling some more later on at this rate.

Is this a common issue with Great House Dagoth and does anyone have any work around beyond the dubious method I used? My game is extensively modded, including the Greater Dwemer Ruins mod, but I also have the compatibility patch for it and GHD. All three are also the last mods in my load order, barring my merged lists from Wrye Mash. Here's my list though:

Masters for d20000.ess:
001 Morrowind.esm
002 Tribunal.esm
003 Bloodmoon.esm
004 Better Heads.esm
005 Morrowind Rebirth 3.1 - Morrowind Patch 1.6.5 Beta [Rebirth Edit].esm
006 Morrowind Rebirth 3.1 - Racial Diversity 1.4 [Addon].esm
007 Better Heads Tribunal addon.esm
008 Better Heads Bloodmoon addon.esm
009 Assassins Armory.esm
010 The Undead.esm
011 Rise of House Telvanni.esm
012 Morrowind Comes Alive.esm
013 GDR_MasterFile.esm
014 wl_SolstheimOverhaul_v1.esm
015 Uvirith Unleashed v1.2.esp
016 Robe_update.esp
017 DodgeTribunal-v21.esp
018 Lilarcor_v4-1.esp
019 Drow Race V 1.7 for BBV2 .esp
020 Werewolf_Evolution.esp (Version 1.0)
021 Vampire_Werewolf.esp (Version 1.2)
022 Morrowind Comes Alive Recruitable NPCs.esp
023 Assassins Armory - No Scripts.esp
024 Sleepers Robe.esp
025 werewolfrealism-moononly_changeatwill.esp
026 MWE_Base.esp
027 Vampire_Embrace.esp
028 Vampiric Hunger Base.esp
029 Vampiric Hunger Extended.esp
030 Vampiric Hunger MGE Addon for MGE 1.10f-.esp
031 blackhoodedrobesbykalikut.esp
032 DW_assassination.esp
033 Werevampire_realism_changeatwill_patch.esp
034 DM_DB Armor Replacer.esp
035 Enhanced_Stealth.esp
036 Clean Royal Chargen.esp
037 Royal Chargen Calvus add-on.esp
038 FollowMeMWOnly.esp
039 Vampire Robe.esp
040 Soul Gems For Sale Version 1.0.esp
041 Ravenloft_v0502d.esp
042 Westly's Master Headpack X.esp
043 Ravenloft_Tower_v0101a.esp
044 Balmora University V.1.9..esp
045 UT2walkthrough.esp
046 RealSignposts.esp
047 CliffRacerExterminator.esp
048 Gothic Attire Complete.esp
049 MW_Public_Library.esp
050 Better Clothes_v1.1_nac.esp
051 More Better Clothes.ESP
052 Better Bodies.esp
053 NX9_Guards_Complete.ESP
054 Morrowind Rebirth 3.1 - Balmoras Underworld 1.0 [Addon].ESP
055 Encumberance increaser StrX15.esp
056 Morrowind Rebirth 3.1.ESP
057 Rain's Hand Hall.esp
058 Restoring Rain's Hand Hall.esp
059 Morag Tong Expanded.esp
060 LowerFirstPersonSneak.ESP
061 Very rich Creeper and mudcrab.esp
062 Cast On Use B-Gone.esp
063 SpeechcraftBalance.ESP
064 Museum of Artifacts Improved Expanded.esp
065 Graphic Herbalism.esp
066 Book Jackets - Morrowind.esp
067 RKCriminals TR&BM.esp
068 Book Jackets - Tribunal.esp
069 Book Jackets - Bloodmoon.esp
070 NoShieldEffect.esp
071 DK_Dremoras_v2.esp
072 ImprovedTeleportation2.0.esp
073 The Mystic Potion, a mana upgrade.esp
074 Enhanced Economics 2.0.esp
075 Homebrew - 1 regen all spell.ESP
076 MultiMark-Clean.esp
077 MultiMark_BloodmoonPlugin-Clean.esp
078 D2items.ESP
079 Multimarktribunal-Clean.esp
080 Clean Join all Houses.esp (Version 1.1)
081 Mantlewoe_redone.esp
082 Illuminated Order v1.0.esp
083 HOMEBREW - illuminated order lich change.ESP
084 Better Snow Prince.ESP
085 Antares' Big Mod 7.4.esp
086 Sotha Sil Expanded.ESP
087 Welcome to the Arena! v6.6.esp
088 The Warlocks Infernum.esp
089 llm-medium.esp
090 THE_UNDERGROUND_2.esp
091 homebrew - slowfall spell.ESP
092 OR_umbraReplace.esp
093 Raven`s Armor.esp
094 homebrew 11customsilverblade.ESP
095 Great House Dagoth.esp (Version 1.04)
096 DN-GDRv1.esp
097 DNGDR-GHD Patch.esp
098 Mashed Lists.esp

Any insights would be greatly appreciated