Huge texture mod + MMM + OOO

[Axagthoth]

Hi everybody, this is my first post so excuse me if there's anything wrong with it.

I' ve got a problem (well, it's more like a bug) with Oblivion and the mods I use with it. So far I had managed to install and make compatible the following mods:

-Natural weather

-IWR

-Improved trees and flora

-Improved signs

-Improved food and veggies

-Better doors

-Qarl's texture pack 3

-Qarl's improved normal maps

-LOD detail textures (can't remember now if the ones from koldorn or from Qarl, probably the latter)

-Almost Everything Visible When Distant (not MAEVWD)

-OOO 1.3 + 1.31 patch

-and more recently OOO 1.32 RC5 (which adds the OOO .esm and is of relevance further down)

-besides i have tweaked the .ini file, but I don't think that has got something to do with the bug at all

-The games version, is 1.2.0416 Shivering Isles

 

Now, while having installed all the mods stated above, the game runs fine, to be more accurate it's GORGEOUS. The problem appears when I try to install MMM 3.5.3 (or even MMM 3.0). I've tried both the full 3.5.3 install and installing first 3.0 and then patching to 3.5.3. I use the MMM for OOO .esp, of course, and the load order (managed through Oblivion Mod Manager) is first OOO and it's add-ons , second MMM and it's add-ons.

The bug has got nothing to do with the CONTENT of the mods, I've played some hours and all new content is available and doesn't seem to conflict (on the contrary, it breathes new life into Oblivion).

But, (apparently at random, first I thought it was only the quest-related NPC, but it appears not to be that way) some NPC just LOSE THEIR VOICE. What I mean is, the sound strings related to them can't be heard. You can read the subtitles, but you don't HEAR what they say. I say it is at random because for example Rasheda at Chorrol has no voice, while the smith in Cheydinhal has. One beggar in Bruma has lost speech while the one in Cheydinhal hasn't. Jauffre doesn't talk either, and the same happens with Baurus.These are just a few examples.

Does anybody know a solution, or can someone tell me if this is a common problem or a rather strange bug?

Please if you happen to know anything, let me know. Perhaps the UOP does work here?

Thanks