I've been having a problem with Fligg's Slave Mod that makes it so whenever the mod is active, random slaves just die for no particular reason. I have no idea what could be causing this, but perhaps my mod list will give some clues. My game is clean as far as I know.

GameFile0=Bloodmoon.esm
GameFile1=Book Rotate.esm
GameFile2=Clean The Lost Artifacts of Morrowind.esm
GameFile3=Morrowind Patch 1.6.5 Beta (BTB Edit).esm
GameFile4=Morrowind.esm
GameFile5=Rise of House Telvanni.esm
GameFile6=Tribunal.esm
GameFile7=TR_Data.esm
GameFile8=TR_Map1.esm
GameFile9=TR_Map2.esm
GameFile10=￡exa's Dwemer Alchemy V2 (EN).esm
GameFile11=AEA-Compatibility.esp
GameFile12=Ald Redaynia Extended.esp
GameFile13=almalexia armor.esp
GameFile14=Antares' Creatures - Beholder.esp
GameFile15=AOF Potions Recolored T+B.esp
GameFile16=Better Bodies.esp
GameFile17=Better Telekinesis.esp
GameFile18=BE_ghetto_No_BE.esp
GameFile19=Book Jackets - Bloodmoon - BookRotate.esp
GameFile20=Book Jackets - Morrowind - BookRotate.esp
GameFile21=Book Jackets - Tribunal - BookRotate.esp
GameFile22=Book Rotate - Bloodmoon v5.3.esp
GameFile23=Book Rotate - Morrowind v1.1.esp
GameFile24=Book Rotate - Tribunal v5.3.esp
GameFile25=Books of Vvardenfell.esp
GameFile26=Building Up Uvirith's Legacy1.1.ESP
GameFile27=Caius Constant effect items.esp
GameFile28=Clean New Vivec Ashmask 1.1.esp
GameFile29=Clean Restored Artifacts.esp
GameFile30=CleanAreaEffectArrows.esp
GameFile31=CleanBitterCoastSounds.esp
GameFile32=CleanEntertainers.esp
GameFile33=CleanHelmOfTohan.esp
GameFile34=CleanMasterIndex.esp
GameFile35=Clean_Foeburner_Fix.esp
GameFile36=Clean_Fury.esp
GameFile37=Clean_Templar_Pauldron_Fix_v11.esp
GameFile38=Complete ABCs for Barbarians.esp
GameFile39=Complete Armor Joints.esp
GameFile40=Dagger of Symmachus.esp
GameFile41=Dark Uvirith Exterior BuUG 1.0.esp
GameFile42=Dark Uvirith Exterior.esp
GameFile43=DA_Sobitur_Facility_Clean.ESP
GameFile44=DA_Sobitur_Quest_Part_1 Clean.esp
GameFile45=DA_Sobitur_Quest_Part_2 Clean.esp
GameFile46=DA_Sobitur_Repurposed_1.ESP
GameFile47=DA_Sobitur_YA_Compatibility.ESP
GameFile48=Dungeon & Diamond.esp
GameFile49=Ebony Armor Fixes.esp
GameFile50=EBQ_Artifact.esp
GameFile51=Elemental Magicka 1.0.esp
GameFile52=Fligg's Slave Mod.esp
GameFile53=Fortified_Thirsk_1.1.esp
GameFile54=Frostmoth Docks.ESP
GameFile55=Goris the Maggot King.esp
GameFile56=graffhelm replacer.ESP
GameFile57=guarskin_drum_replacer.esp
GameFile58=heartwood.esp
GameFile59=ImprovedAdamantiumArmor.esp
GameFile60=JWR_Dwemer_L.esp
GameFile61=Kogoruhn Ruins 1.11.ESP
GameFile62=k_weather.esp
GameFile63=LazyStriderV1.3.esp
GameFile64=LA_MWSE Addon.esp
GameFile65=LeFemmArmor.esp
GameFile66=ls_DBAttackring.esp
GameFile67=Master Index Upgrade.esp
GameFile68=MA_nordleg_enchantment.ESP
GameFile69=MA_snowprincetomb_v3.esp
GameFile70=md_magebane_replacer.ESP
GameFile71=MoneyRing_1125.esp
GameFile72=Morrowind Code Patch Showcase.esp
GameFile73=Morrowind Rebirth 1.3.ESP
GameFile74=Neo's Unique Creatures.esp
GameFile75=New Argonian Bodies - Mature.esp
GameFile76=New Bloodworm Helm_4.esp
GameFile77=New Bow of Shadows.esp
GameFile78=New Khajiit Bodies - Mature.esp
GameFile79=New Veloth's Judgement.esp
GameFile80=OR_Fang.esp
GameFile81=OR_ForkH.esp
GameFile82=OR_SpiritEat.esp
GameFile83=Painkiller's Lucky Coin.esp
GameFile84=Pandys Cheats.esp
GameFile85=Particle Arrow Replacer.esp
GameFile86=Psy_IronMeshImprove_Uniques_BME.esp
GameFile87=Psy_VGR_Armour.esp
GameFile88=Resource Tale of the Devious Trader.esp
GameFile89=ring_teleport v3_Tealpanda.esp
GameFile90=Robe_Crowswrath.esp
GameFile91=Scripted_Spells.esp
GameFile92=SiegeAtFiremoth.esp
GameFile93=Silt Strider Armor - Ashlander Guards.ESP
GameFile94=Slof's Pillow Book.esp
GameFile95=sm_Bracersobs.ESP
GameFile96=sm_DwemerStaves.esp
GameFile97=sm_ForgottenHalls.esp
GameFile98=Sm_longspears.esp
GameFile99=sm_necro_staff.esp
GameFile100=Tale of the Devious Trader.esp
GameFile101=TC_SadrithMoraClosed.esp
GameFile102=The Neverhalls.esp
GameFile103=The Real Bluebrand v2.esp
GameFile104=TheForgottenShields - Artifacts_NG.esp
GameFile105=Thirsk Expanded.esp
GameFile106=UFR_v3dot2.esp
GameFile107=UL v2.0 RoHT v1.52 Compatibility.esp
GameFile108=UL_chess_addon.esp
GameFile109=UL_MWSE_patch.esp
GameFile110=Unique Tombs.esp
GameFile111=Uvirith's Legacy Book Jackets Add-on.esp
GameFile112=Uvirith's Legacy_Final_2.0.esp
GameFile113=Vampire_Embrace.esp
GameFile114=Vivec Expansion 2.0.esp
GameFile115=vn_lichcraft2.esp
GameFile116=Westly's Master Headpack X.esp
GameFile117=Wizard's Rest - Linking Book.esp
GameFile118=Wizard's Rest - Muffin Sorter.esp
GameFile119=Wizard's Rest.esp
GameFile120=Yagrum Advanced 2.0.esp

Thanks for your help.

I'm not familiar with Fligg's Slave Mod, anyway I suggest you post your list in loading order, it may help finding potential conflicts.
To get a loading order list instead of just a loading list, you could use Mash File\Copy list or Mlox right click on left panel, select all, copy

I may know less about mods than anyone who regularly visits this forum, but I will try. You have not been very specific about the circumstances when slaves die. I believe Fliggerty's mod makes it possible for the player to buy or claim freed slaves as a personal slave (companion). There is a http://emmates.proboards.com/index.cgi?board=morrowind&action=display&thread=6 bug affecting companions under the influence of constant effect. Changing cells may result in the effects reversing and adversely affecting the companion. If your slaves are perishing upon passing through a load door then check to see if your slaves are wearing some kind of constant effect enchantment.

The slave bracer itself has a constant effect enchantment of drain magicka, but I would not think that a problem (particularly since the reverse of that would add magicka). Also, I believe I have traveled with slaves still wearing their bracers outside of their starting cell without them dieing so I doubt the bracers are the source of the problem.

I'm wondering if maybe a mod changes the Slave Bracer in any way. I wouldn't think so, but it's a possibility. It's more of a "Turn the mod on; slaves die" kind of thing. It only seems to happen when I load different cells. Here's the load order.

001 Morrowind.esm
002 Tribunal.esm
003 Bloodmoon.esm
004 Book Rotate.esm
005 Clean The Lost Artifacts of Morrowind.esm
006 TR_Data.esm
007 TR_Map1.esm
008 TR_Map2.esm
009 Morrowind Patch 1.6.5 Beta (BTB Edit).esm
010 Rise of House Telvanni.esm
011 ￡exa's Dwemer Alchemy V2 (EN).esm
012 AOF Potions Recolored T+B.esp
013 EBQ_Artifact.esp
014 Vivec Expansion 2.0.esp
015 ImprovedAdamantiumArmor.esp
016 CleanAreaEffectArrows.esp
017 CleanBitterCoastSounds.esp
018 CleanEntertainers.esp
019 CleanHelmOfTohan.esp
020 CleanMasterIndex.esp
021 LeFemmArmor.esp
022 SiegeAtFiremoth.esp
023 Book Rotate - Morrowind v1.1.esp
024 Better Bodies.esp
025 Fortified_Thirsk_1.1.esp
026 Yagrum Advanced 2.0.esp (Version 2.0)
027 Dagger of Symmachus.esp
028 BE_ghetto_No_BE.esp
029 Scripted_Spells.esp
030 Ebony Armor Fixes.esp
031 Book Rotate - Tribunal v5.3.esp
032 Book Rotate - Bloodmoon v5.3.esp
033 Thirsk Expanded.esp
034 Complete ABCs for Barbarians.esp
035 k_weather.esp
036 vn_lichcraft2.esp
037 OR_Fang.esp
038 OR_ForkH.esp
039 OR_SpiritEat.esp
040 Book Jackets - Morrowind - BookRotate.esp
041 Book Jackets - Tribunal - BookRotate.esp
042 Book Jackets - Bloodmoon - BookRotate.esp
043 Ald Redaynia Extended.esp
044 Clean Restored Artifacts.esp
045 Slof's Pillow Book.esp
046 TC_SadrithMoraClosed.esp
047 Caius Constant effect items.esp
048 Tale of the Devious Trader.esp
049 Resource Tale of the Devious Trader.esp
050 Pandys Cheats.esp
051 Neo's Unique Creatures.esp
052 Westly's Master Headpack X.esp
053 The Neverhalls.esp
054 ls_DBAttackring.esp
055 The Real Bluebrand v2.esp
056 Complete Armor Joints.esp
057 Master Index Upgrade.esp
058 JWR_Dwemer_L.esp
059 sm_necro_staff.esp
060 Sm_longspears.esp
061 Better Telekinesis.esp
062 New Argonian Bodies - Mature.esp
063 New Khajiit Bodies - Mature.esp
064 sm_DwemerStaves.esp
065 almalexia armor.esp
066 LazyStriderV1.3.esp
067 heartwood.esp
068 New Veloth's Judgement.esp
069 LA_MWSE Addon.esp
070 Wizard's Rest.esp
071 Wizard's Rest - Linking Book.esp
072 Wizard's Rest - Muffin Sorter.esp
073 Particle Arrow Replacer.esp
074 AEA-Compatibility.esp
075 Goris the Maggot King.esp
076 Robe_Crowswrath.esp
077 Psy_VGR_Armour.esp
078 Clean_Fury.esp
079 Books of Vvardenfell.esp
080 Uvirith's Legacy_Final_2.0.esp
081 New Bow of Shadows.esp
082 MA_snowprincetomb_v3.esp
083 Psy_IronMeshImprove_Uniques_BME.esp
084 Unique Tombs.esp
085 Elemental Magicka 1.0.esp
086 New Bloodworm Helm_4.esp
087 sm_ForgottenHalls.esp
088 Clean New Vivec Ashmask 1.1.esp
089 Uvirith's Legacy Book Jackets Add-on.esp
090 guarskin_drum_replacer.esp
091 UL v2.0 RoHT v1.52 Compatibility.esp
092 UFR_v3dot2.esp
093 Morrowind Code Patch Showcase.esp (Version 0.5)
094 UL_chess_addon.esp
095 Antares' Creatures - Beholder.esp
096 DA_Sobitur_Quest_Part_1 Clean.esp
097 DA_Sobitur_Quest_Part_2 Clean.esp
098 ring_teleport v3_Tealpanda.esp
099 Dungeon & Diamond.esp
100 Clean_Foeburner_Fix.esp
101 Clean_Templar_Pauldron_Fix_v11.esp
102 MoneyRing_1125.esp
103 Dark Uvirith Exterior BuUG 1.0.esp
104 Dark Uvirith Exterior.esp
105 Vampire_Embrace.esp
106 UL_MWSE_patch.esp
107 TheForgottenShields - Artifacts_NG.esp
108 Painkiller's Lucky Coin.esp
109 Fligg's Slave Mod.esp
110 md_magebane_replacer.ESP
111 Building Up Uvirith's Legacy1.1.ESP
112 Silt Strider Armor - Ashlander Guards.ESP
113 MA_nordleg_enchantment.ESP
114 Frostmoth Docks.ESP
115 graffhelm replacer.ESP
116 sm_Bracersobs.ESP
117 DA_Sobitur_Facility_Clean.ESP
118 DA_Sobitur_YA_Compatibility.ESP
119 DA_Sobitur_Repurposed_1.ESP
120 Kogoruhn Ruins 1.11.ESP
121 Morrowind Rebirth 1.3.ESP

what is sm_Bracersobs.ESP?

It's Midgetalien's Bracers of Blinding Strike mod. Adds unique bracers to an NPC outside of Andre Maul's tower. I think what I'll do is I'll disable all of my mods besides the most important, and I'll try to find the culprit from there. I'll give you guys a heads up if I find anything.

EDIT: Interestingly enough, after I tested and re-enabled many of the esps I used in a past save game on a new save game, I didn't experience the random deaths. I suppose it was a save problem, though I can't be sure. Oh well, whatever the problem was is gone now.