Ok, here's my mod list

[Game Files]GameFile0=Bloodmoon.esmGameFile1=Morrowind Patch v1.6.5-BETA.esmGameFile2=Morrowind.esmGameFile3=Tribunal.esmGameFile4=Alkain's Tweaks.espGameFile5=Antares' Big Mod 5.espGameFile6=Better Bodies.espGameFile7=Blasphemous Revenants.espGameFile8=Building Up Uvirith's Legacy1.1.ESPGameFile9=Erengard Mines-MC-compatible.espGameFile10=Flee AI Tweaks.espGameFile11=Great House Dagoth ( Master Index Compatibility ).espGameFile12=Great House Dagoth.espGameFile13=Illuminated Order v1.0 - Bloodmoon Compatibility Extras.espGameFile14=Illuminated Order v1.0.espGameFile15=Join All Houses.espGameFile16=Moons_Spawn_V1.3.3_Non_Patched.espGameFile17=Morrowind Crafting 2-1.espGameFile18=Morrowind Crafting Equipment.espGameFile19=Princess Factors Estate.espGameFile20=Scripted_Spells.espGameFile21=The Tribe Unmourned (GHD).espGameFile22=UL_MWSE_patch.espGameFile23=Uvirith's Legacy_BETA1.10.espGameFile24=Vampire_Embrace.espGameFile25=Vampiric Hunger Base.espGameFile26=Vampiric Hunger Extended.espGameFile27=Vampiric Hunger MGE Addon for MGE 1.11+.espGameFile28=master_index.espGameFile29=ring_teleport v3_Tealpanda.esp

And here's what it is saying

Script AshVamp2voiceSyntax Error Line 1Could not find variable "IndexCount".

==>CompileAndRun problem was found in Topic "Telasero index"Yes, this is exactly what I @need#. [Dagoth Uthol casts a spell on the @Telasero index#.] This index has shown me the locations of its brothers. I will @need# you to go and retreave them."

I'm sure it has something to do with the master index mod, just no idea what

Strange bug, AshVamp2Voice is from the Tribe Unmourned and in the GHD version it should ( I'm not sure) be for a resurrected Hearthwright. Did you already kill Uthol for his place in House Dagoth, or maybe it is simply your mod order, I remind read something in the GHD Master Index readme that it should be loaded after the Master Index plugin.

PS : don't forget to clean your save with Wrye Mash before playing the plugin, it saved me from countless errors script.

No, I haven't killed him yet. I'll try the load order though

EDIT: Well, that didn't work. Even tried uninstalling The Tribe Unmourned :/

Did you try loading those three in a different order?

I would try them in this order and see if that clears it up:

GameFile28=master_index.esp
GameFile12=Great House Dagoth.esp
GameFile11=Great House Dagoth ( Master Index Compatibility ).esp

I never tried GHD so this is just a guess.