I'm running FCOM and every now and then when I kill a Bandit I'll get a pop-up informing me I attacked a Thieves Guild member and I have to pay some money. I've been looking through the factions changes in TES4EDIT, in case any of the Bandits where part of the Thieves Guild faction, but there's lots of them and so far no luck. Any other ideas?

Here's my load order as well:

Active Mod Files:00  Oblivion.esm01  Cobl Main.esm  [Version 1.72]02  Oscuro's_Oblivion_Overhaul.esm  [Version 1.33]03  Mart's Monster Mod.esm  [Version 3.7b3p3]04  FCOM_Convergence.esm  [Version 0.9.9MB3]05  Armamentarium.esm  [Version 1.35]06  Kvatch Rebuilt.esm07  Better Cities Resources.esm08  HorseCombatMaster.esm09  VVAdvanced.esm  [Version 1.00]0A  Cobl Races TNR.esp  [Version 1.53]0B  Cobl Races TNR SI.esp  [Version 1.53]0C  Unofficial Oblivion Patch.esp  [Version 3.2.0]0D  UOP Vampire Aging & Face Fix.esp  [Version 1.0.0]0E  Oblivion Citadel Door Fix.esp0F  DLCShiveringIsles.esp10  Unofficial Shivering Isles Patch.esp  [Version 1.4.0]11  Better Cities .esp12  PTCombatSpeechcraftMedium.esp13  MM_TextLocks.esp14  Never die.esp15  Wyverex - Deployable Traps.esp16  Living Economy - SI.esp17  DropLitTorchOBSE.esp  [Version 2.4]18  Enhanced Hotkeys.esp  [Version 2.0]19  DLCHorseArmor.esp1A  DLCHorseArmor - Unofficial Patch.esp  [Version 1.0.5]1B  DLCOrrery.esp1C  DLCOrrery - Unofficial Patch.esp  [Version 1.0.3]1D  DLCVileLair.esp1E  DLCVileLair - Unofficial Patch.esp  [Version 1.0.5]1F  DLCMehrunesRazor.esp20  DLCMehrunesRazor - Unofficial Patch.esp  [Version 1.0.4]21  DLCSpellTomes.esp22  DLCSpellTomes - Unofficial Patch.esp  [Version 1.0.1]23  MaleBodyReplacerV4.esp24  Command Mount.esp25  DLCThievesDen.esp26  DLCThievesDen - Unofficial Patch.esp  [Version 1.0.5]27  DLCThievesDen - Unofficial Patch - SSSB.esp  [Version 1.0.4]28  KDCircletsOOOOptimized - NPC Equip.esp  [Version 1.2]29  Slof's Oblivion Robe Trader.esp2A  Cobl Glue.esp  [Version 1.72]2B  Cobl Si.esp  [Version 1.63]2C  VVAdvanced.esp  [Version 1.00]2D  VVAdvanced-SI.esp  [Version 1.00]2E  Bob's Armory Oblivion.esp2F  Loth's Blunt Weapons for Npcs.esp30  Oblivion WarCry EV.esp31  FCOM_WarCryNoSpawn.esp  [Version 0.9.9]32  Oscuro's_Oblivion_Overhaul.esp  [Version 1.33]++  OOO-DLT_Remover.esp  [Version 1.33]++  ArmamentariumLL.esp  [Version 1.35]33  ArmamentariumLLVendors.esp  [Version 1.35]++  ArmamentariumLLMagic.esp  [Version 1.35]34  ArmamentariumArtifacts.esp  [Version 1.35]++  ArmamentariumLLArmaVendor.esp  [Version 1.35]35  OOO 1.32-Cobl.esp  [Version 1.72]36  Mart's Monster Mod - Additional Enemy NPC Vars.esp  [Version 3.7b3p3]37  FCOM_Convergence.esp  [Version 0.9.9Mb3]38  FCOM_EntropicOrderRebalance.esp  [Version 0.9.9beta2]39  FCOM_RealSwords.esp  [Version 0.9.9]3A  FCOM_DurabilityAndDamage.esp  [Version 0.9.9]3B  Mart's Monster Mod - More Wilderness Life.esp  [Version 3.7b3p3]3C  FCOM_SaferRoads.esp  [Version 0.9.9]3D  Mart's Monster Mod - Looting NPCs & Creatures.esp  [Version 3.7b3p3]3E  Mart's Monster Mod - Dungeons of MMM.esp  [Version 3.7b3p3]3F  Mart's Monster Mod - Gems & Gem Dust.esp  [Version 3.7b3p3]40  Mart's Monster Mod - Hunting & Crafting.esp  [Version 3.7b3p3]41  Mart's Monster Mod - Farm Animals.esp  [Version 3.7b3p3]42  Mart's Monster Mod - Diverse WaterLife.esp  [Version 3.7b3p3]43  Mart's Monster Mod - Slof Horses Complete.esp  [Version 3.7b3p3]44  Mart's Monster Mod - Diverse Runeskulls Loot G&GD.esp  [Version 3.7b3p3]45  FCOM_HungersUnitySI.esp  [Version 0.9.9]46  FCOM_FriendlierFactions.esp  [Version 0.9.9]47  FCOM_MoreRandomSpawns.esp  [Version 0.9.9]48  FCOM_MoreRandomItems.esp  [Version 0.9.9]49  T.I.E4MODS.esp  [Version 0.41]4A  T.I.E4MODSOOO+FCOM.esp  [Version 0.41]4B  Mart's Monster Mod - Shivering Isles.esp  [Version 3.7b3p3]4C  ArmamentariumLL4OOO.esp  [Version 2.01]4D  ArmamentariumLLMagicOOO.esp  [Version 1.35]4E  FineWeapons for OOO.esp4F  RustyItems for OOO.esp50  OOO-WaterFish.esp  [Version 1.34]51  MMM-Cobl.esp  [Version 1.69]52  Kvatch Rebuilt.esp53  DLCBattlehornCastle.esp54  DLCBattlehornCastle - Unofficial Patch.esp  [Version 1.0.4]55  DLCFrostcrag.esp56  DLCFrostcrag - Unofficial Patch.esp  [Version 1.0.4]57  Knights.esp58  Knights - Unofficial Patch.esp  [Version 1.0.9]59  FCOM_Knights.esp  [Version 0.9.9Mb3]5A  xuldarkforest.esp  [Version 1.0.5]5B  xulStendarrValley.esp  [Version 1.2.2]5C  xulTheHeath.esp5D  XulEntiusGorge.esp5E  xulFallenleafEverglade.esp  [Version 1.3.1]5F  xulColovianHighlands_EV.esp  [Version 1.2.1]60  xulChorrolHinterland.esp  [Version 1.2.2]61  xulBeachesOfCyrodiilLostCoast.esp  [Version 1.6.4]62  xulBravilBarrowfields.esp  [Version 1.3.2]63  xulLushWoodlands.esp  [Version 1.3.1]64  xulAncientYews.esp  [Version 1.4.3]65  xulAncientRedwoods.esp  [Version 1.6]66  xulCloudtopMountains.esp  [Version 1.0.3]67  xulArriusCreek.esp  [Version 1.1.3]68  xulPatch_AY_AC.esp  [Version 1.1]69  xulRollingHills_EV_withoutWheat.esp  [Version 1.3.2]6A  xulPantherRiver.esp6B  xulRiverEthe.esp  [Version 1.0.2]6C  xulBrenaRiverRavine.esp  [Version 1.1]6D  xulImperialIsle.esp  [Version 1.6.6]6E  xulBlackwoodForest.esp  [Version 1.1.0]6F  xulCheydinhalFalls.esp  [Version 1.0.1]70  xulAspenWood.esp  [Version 1.0.2]71  xulSkingradOutskirts.esp  [Version 1.0.1]72  xulSnowdale.esp  [Version 1.0]73  JQ-Fighters_Guild_United.esp74  FCOM_FighterGUnited.esp75  Harvest [Flora].esp  [Version 3.0.0]76  Harvest [Flora] - Shivering Isles.esp  [Version 3.0.0]77  Harvest [Flora] - DLCVileLair.esp  [Version 3.0.0]78  Harvest [Flora] - DLCFrostcrag.esp  [Version 3.0.0]79  HUD Status Bars.esp  [Version 2.0.1]7A  DS Storage Sacks.esp  [Version 1.3]7B  Kyoma's Journal Mod.esp  [Version 3.2.0]7C  kuerteeInventoryIsABackpack.esp7D  P1DkeyChain.esp  [Version 5.00]7E  PersuasionOverhaul.esp  [Version 1.43]7F  PersuasionOverhaul_OOO.esp  [Version 1.2]80  PersuasionOverhaul_MMM.esp  [Version 1.2]81  Salmo the Baker, Cobl.esp  [Version 3.08]82  RealisticHealth.esp83  SupremeMagicka.esp  [Version 0.89]84  SM_ShiveringIsles.esp  [Version 0.86]85  SM_DLCSpellTome.esp  [Version 0.80]86  SM_OOO.esp  [Version 0.89]87  SM_MMM.esp  [Version 0.89]88  SM_COBL.esp  [Version 0.86]89  SM_EnchantStaff.esp  [Version 0.80]8A  SM_UnlockSpells.esp  [Version 0.70]8B  SM_NoSpellLights.esp  [Version 0.70]8C  SM_Scrolls.esp  [Version 0.84]8D  SM_SigilStone.esp  [Version 0.83]8E  StealthyAbsorbsAndDrains.esp8F  RshAlchemy.esp90  SM Combat Hide.esp  [Version 1.2]91  PTSneakPenalties.esp92  StealthOverhaul.esp93  SM Bounty.esp  [Version 1.22c]94  CoblDeathFix.esp  [Version 1.20]95  cancelattack.esp96  BetterBlocking.esp  [Version 3]97  Mounted_Spellcasting_Deadly_Reflex_Compatible.esp98  RealisticLeveling.esp99  SP1stPLegs.esp9A  Cobl Races.esp  [Version 1.52]9B  Cobl Races - Balanced.esp  [Version 1.52]9C  Better Cities Full.esp9D  Better Cities - VWD of the IC.esp9E  Better Imperial City.esp9F  Better Imperial City FPS Patch.espA0  Better Cities Full FPS Patch.espA1  DeadlyReflex 6 - Combat Moves.espA2  Cobl Silent Equip Misc.esp  [Version 01]A3  Bashed Patch, 0.espA4  Makblock.espA5  SlowMinorSkills.espA6  SBsaddlebags.espA7  Streamline 3.0.esp

For some reason, I wanna think it's TIE4 doing it. Are those bandits immediately hostile or are you ranging them?

Not immediately hostile, I had assumed it was from "46 FCOM_FriendlierFactions.esp "