Missing meshes / incomplete installation?

Thanks in advance for your help. The amount of work that's gone into this mod is stunning and inspiring.

I've completed the installation for Morroblivion and the game itself is running fine. However, one of the enemy NPCs in the first cave (Mulvisie Othril in Addamasartus) is standing inside a giant yellow diamond with an exclamation point on it, which I've read means that the game cannot find a mesh or texture that applies to the NPC. I have not gone past Sedya Neen or Addamasartus to see how many other yellow diamond errors I get. (I believe it will be many. See below.)

First, here's the list of files that I've used during install, in the order that I installed them in. I used BOSS to initially change the order, and I've been changing modified-by dates manually when I wanted to try something out. Even though I'm new to installing mods, I've found the installation procedure to be straightforward.

Unofficial_Oblivion_Patch_v3_2_0_Installer_Version-5296.exe

Vvardenfell Imports 1.7z

VVardenfell Imports 2.7z

Vvardenfell_Imports_Part_3-28245.7z

Vvardenfell_Imports_Patch_1-28245.7z

Vvardenfell_Imports_Patch_2-28245.7z

Vvardenfell_Imports_Addon_includes_esp_fix-28246.7z

obse_0019b.zip

OBSE_-Elys-_Universal_Silent_Voice_v93-16622.zip

Morroblivon Complete Installation Part 1.rar

Morroblivon Complete Installation Part 2.rar

Morroblivon Complete Installation Part 3.rar

Morrowind_ob Version 026.rar

Morroblivion Additional Support Files.rar

Second, here's my incredibly long text detailing what I've done so far to determine the cause of my problem :

In order to see what meshes were missing, I downloaded the TES Construction Set. I've never used it before, so I may be misinterpreting what it's telling me, but it does look like I'm missing weapons/ammo meshes and textures.

When I load Morrowind_ob.esm in it and head to Mulvisie Othril's record (Cell view, World Space : Interiors, Addamasartus, 0MulvisieSOthril) I get the following messagebox : Model Load Error : in Weapons\Bone\Arrow.nif. (I assume marker_error.nif, which is used instead, is the yellow diamond.) Continuing forward, I get another messagebox : Could not find parent node extra data for 'BASE Weapons\Bone\Arrow.nif'. I cannot find any subdirectory with the form 'Weapons\Bone' anywhere in my Oblivion/Data directory or in any installation file I've downloaded. Mulvisie Othril does not show up in the preview window. His compatriots load with no errors and appear in the preview window.

In Mulvisie Othril's inventory, I find a record for 0AAMWArrowChitin. This appears to the the same as 0AAMWArrowChitin in the Object Window (Items, Ammo, Weapons, Bone). Double-clicking here gives me the messagebox : Icon file Textures\Menus\Icons\Weapons\BoneQuiver.dds not found. Moving forward, I see that the mesh and texture files are Weapons\Bone\Arrow.nif and Weapons\BoneQuiver.dds, which I cannot find anywhere. 

Jumping around through the Object Window's weapons list, I see that many weapons load with no messageboxes, and in all of those cases, I can find the associated mesh and texture file listed. So far, I've seen that DarkSeducer, Jyygylag, and Madness weapons all load with errors, and in those cases, I cannot find either the mesh, texture, or icon. There are probably many more missing files but I have stopped looking.

Since then, I've assumed that I've just forgotten an installation file that contains all of those meshes and textures, but for the life of me, I can't find it. Alternately, I've seriously screwed up the installation at some point and haven't realized it.

I hope the above was clear. Again, thanks in advance for your help.