So after building a new computer, I installed Fallout 3 and performed extensive mod testing to find the source of an old problem with Lings Finer Things. It never appeared, and I felt myself to be safe from conflicts for the time being. The process was simply to start a new game and take myself as far as Tenpenny Tower upon exiting Vault 101, and making a save there, just before the gate, and then installing each mod one at a time, and checking each time to see if it caused the error. I had forgotten the autosave, however, which had given me a file just within Tenpenny Tower, and I used that for the conflict check after disabling further autosaves.

After this testing, I decided to be sure, I went back and loaded up the save before the gate once all of my mods were installed, and therein lies the problem. After the slew of messages from Bortherhood Patrols, Alton, Groovatron, and Enhanced Weather and the like... it would start to rain, and my rad meter would appear and increase, courtesy of Enhanced Weather. And then, curiously, a red ! diamond would appear around my character, slowly materializing. http://i115.photobucket.com/albums/n319/TheRisingDragon/ScreenShot1.png Furthermore, many of the residents, including Susan Lancaster, were missing their bodies entirely, leaving only their hands and their heads visible. And the hands were colored bright purple, signifying a missing texture error. Some NPCs, such as the security guards and the doctor, retained their full body, though their arms and hands were still colored purple while their heads and faces seem fine.

But it doesn't stop there.

Upon pressing Esc to bring up the menu, it'd come up... http://i115.photobucket.com/albums/n319/TheRisingDragon/ScreenShot2.png. More texture errors--and when I click load to load up a different save... http://i115.photobucket.com/albums/n319/TheRisingDragon/ScreenShot3.png. Exiting the menu retained the purple lighting and I could still not load up a different save. The problem, thus far, has only persisted on this one save file before talking to Gustavo to open the gate to Tenpenny Tower. Loading the autosave of me already in the tower shows that there's nothing wrong within it or outside of it. I have toggled ArchiveInvalidation Invalidated, and have tried the Master Update, which seems to have done more harm than good, as I now can't run the game without the mods (except for Fallout Remastered) being in .esm format.

My load order and mods are as follows:

Fallout3.esm
Anchorage.esm
ThePitt.esm
StreetLights.esm
BrokenSteel.esm
PointLookout.esm
Zeta.esm
Unofficial Fallout 3 Patch.esm
HairPack.esm
Impervious Power Armour.esm
[DC RANGER ARSENAL v3 MASTER].esm
TheInstitute.esm
GNRBuilding_BoS.esm
Alton, IL.esm
EVE.esm
Mart's Mutant Mod.esm
FNNIguana.esm
LingsFinerThings.esm
Companion Core.esm
RobCo Certified v2.esm
Enhanced Weather - Rain and Snow.esm
CrossModData.esm
K2_CompLance.esm
Animy_prostitution.esm
sc_lovers_resource.esm
Unofficial Fallout 3 Patch - Operation Anchorage.esp
Unofficial Fallout 3 Patch - The Pitt.esp
Unofficial Fallout 3 Patch - Broken Steel.esp
Unofficial Fallout 3 Patch - Point Lookout.esp
Unofficial Fallout 3 Patch - Mothership Zeta.esp
hair_add_npc.esp
GalaxyNewsRadio100[M].esp
RadioHotkey.esp
Combat Style Perks.esp
AReasonedArgument.esp
Lobotomized! 400.esp
BoSPatrols.esp
BlackWolf Backpack.esp
BlackWolf Backpack - Vendor Script Replenish.esp
BlackWolf Backpack - Vanilla Big Guns Fix.esp
BlackWolf Backpack - Anchorage Gauss Rifle Fix.esp
BlackWolf Backpack - Zeta Drone Cannon Fix.esp
Blank's Container Backpack (BlackWolf Backpack Plugin).esp
BlackWolf Backpack - Blank's Container Patch.esp
A Place to Stay in The Pitt.esp
A Place to Stay on Mothership Zeta.esp
A Place to Stay for Broken Steel.esp
A Place to Stay in Point Lookout.esp
R18BodyPack.esp
Essential_Zeta_Allies.esp
AbandonedOutpostv1.2.esp
Barge.esp
Farpost Hollow_v1.esp
GNRBuilding_Studio.esp
Home for the Weary.esp
Hunters Ridge V4.esp
K2_PlayWearClub.esp
LadyFrumperton.esp
Location 2 (Fort Constantine).esp
MovinOnUp3.0.esp
RangerArmorSafe.esp
Rivet City Merchants With Point Lookout.esp
Towers Hill.esp
The Yard V1.3.esp
The Dockside Inn and Resort.esp
Vault 89 (player home) V1-35.esp
Tailor Maid.esp
Tailor Maid Anchorage.esp
Tailor Maid PITT.esp
Tailor Maid Brokensteel.esp
Tailor Maid ZETA.esp
Tailor Maid Black Retex.esp
3EFskewer.esp
44Magnum.esp
Accurate Assault Rifles 1.2.esp
New Blackhawk.esp
ShishkebabWithoutGlove.esp
Vibroblade.esp
[DC RANGER ARSENAL v3] - DLC SKIRMISHER HELM.esp
[DC RANGER ARSENAL v3] - DLC GEAR.esp
[DC RANGER ARSENAL v3] - ITEM GENERATOR.esp
12BoltDivingHelmet.esp
3EFdrg.esp
clearhelmets4radsuits.esp
doctorli_glasses.esp
Dogmeat Leather Armor - no crafting.esp
jonasclothesreplacer.esp
jotoughgirlFO3.esp
Lookout Outfits.esp
MissingUniqueArmorClothing-RenamerOnly.esp
Neo's Cowgirl.esp
Neo's DOA Tina.esp
Neo's DOA Christie.esp
Power Armor Revival.esp
Power Armor Revival - Operation Anchorage.esp
Power Armor Revival - The Pitt.esp
Power Armor Revival - Broken Steel.esp
Power Armor Revival - Advanced Power Armor.esp
QNeverclockVaultsuits.esp
QToadletVaultsuit.esp
RD_ElderLyonsRobe.esp
SimpleEyePatch.esp
SomeClothes.esp
T3_leather armors.esp
TeddyPacks.esp
_R_Tribals.esp
LingsFinerThings.esp
CantaburyCommonsGuards.esp
Companion Core DLC Addon.esp
RobCo Certified v2 Mechanist's Edition.esp
RobCo Certified v2 Zeta Addon.esp
Mart's Mutant Mod.esp
Mart's Mutant Mod - DLC Anchorage.esp
Mart's Mutant Mod - DLC The Pitt.esp
Mart's Mutant Mod - DLC Broken Steel.esp
Mart's Mutant Mod - DLC Point Lookout.esp
Mart's Mutant Mod - DLC Zeta.esp
Mart's Mutant Mod - Zones Respawn.esp
Mart's Mutant Mod - Natural Selection.esp
Mart's Mutant Mod - Master Menu Module.esp
outcast_comp.esp
slaveraider.esp
bittercup_comp.esp
CompanionPowerup.esp
LucyWestCompanion.esp
Sydney Follower.esp
1PipboyPDA.esp
bittercup_6.esp
BoS Diversification.esp
BoS Diversification - Broken Steel.esp
BOC Diversification.esp
BOC Diversification - Operation Anchorage.esp
Cliff's_Sellable_Body_Parts.esp
Outcast Collection Agent Expanded - DLC Plugin.esp
ImmersiveTimescale.esp
Enhanced Weather - Rain and Snow in Fallout.esp
Enhanced Weather - Radioactive Rain and Snow Plugin.esp
Enhanced Weather - Weather Sounds in Interiors.esp
Enhanced Weather - Sneak Bonus during Storms.esp
Enhanced Weather - REBOOT.esp
The Groovatron.esp
The Groovatron_DLC_Anch_Addon.esp
The Groovatron_DLC_Pitt_Addon.esp
The Groovatron_DLC_PL_Addon.esp
AinzBeautifuleEyes.esp
EwwGhoulyBody.esp
RobCo Certified v2 EVE.esp
RobCo Certified v2 Impervious.esp
FNNIguana - MMMRC6.esp
Sydney Follower - Load Order Fix.esp
Fallout Remastered.esp
Fallout Remastered - EVE (Paradox Ignition Merge).esp
Fallout Remastered - Mart's Mutants Mod.esp
Fallout Remastered - MMM + EVE (PI Merge).esp

Total active plugins: 154
Total plugins: 188

So, can anyone tell me what I'm doing wrong, or what's causing this issue?