This is what vanilla played for me:
I could walk up to the prision, talk to Dawes, go in, talk to Eddie. Even w/o PG-Armor they would not shoot me (IIRC).
This is how it plays now, after some unidentified mod killed it:
I walk up to the prison w/o PG-Armor, tower guards snipe me.
If I wear PG-Armor, Dawes will talk to me normally and let me pass, no "Powder Ganger Random NPC" will be bothered about me, however each and every named NPC besides Dawes will start shooting at me (and thus all hell will break loose).
The way to work around in game is by running in sight of the special NPC, addtofaction player, stopcombat, addtofaction powder gangers, but that really isn't a sustainable solution. Posting my LO here (using Masterupdate). Any help's appreciated.
Spoiler
X] FalloutNV.esm
[X] DeadMoney.esm
[X] Caliber.esm
[X] Ambient Temperature.esm
[X] FalloutNV_Beloved_Books.esm
[X] Military NV Backpacks.esm
[X] Active Wasteland.esm
[X] Decrucifixion.esm
[X] Weapon Mod Expansion.esm
[X] IWS-Core.esm
[X] Brahmin Bess.esm
[X] FOOK - New Vegas.esm
[X] Lings.esm
[X] FOOK - New Vegas DLCs.esm
[X] MikotoBeauty.esm
[X] New Vegas Redesigned.esm
[X] AWorldOfPain(LowLoot).esm
[X] decwithreg.esm
[X] War Never Changes.esm
[X] Tales from the Burning Sands.esm
[X] ReactivePeople.esm
[X] iHUD.esm
[X] War Never Changes.esp
[X] NewVegasBounties.esp
[X] Reload.esp
[X] Rearm.esp
[X] Rearm test.esp
[X] Goodsprings Spruced Up.esp
[X] The Courier's CollectionV2.esp
[X] CounterfeitBottleCap.esp
[X] NewerVegas.esp
[X] Bobblehunt.esp
[X] MAC.esp
[X] The Chase.esp
[X] TreasureHunt.esp
[X] searchlight_eng.esp
[X] Story of ol' McCartney.esp
[X] Wasteland Defense.esp
[X] lexx-q-warehouse-war-house.esp
[X] GSJohnnyQuest.esp
[X] Machienzo-Behold The Riches.esp
[X] SilentStruggleV1.esp
[X] TheCollector.esp
[X] BCFollowersClinic.esp
[X] SunValley.esp
[X] SadiesSundries.esp
[X] 1stCultOfTheSphere.esp
[X] Identity Crisis Part 2 - Long Night.esp
[X] TheHiddenTreasure.esp
[X] [Candora's Box] Maps & Idles.esp
[X] Reactive People II - Sneak & Diversion.esp
[X] Reactive People - Ultimatum.esp
[X] Followers Ready To Fight.esp
[X] Selected NPCs Revamped NV.esp
[X] Improved Faces v1.esp
[X] My Cloth Collection NV.esp
[X] CompanionDisguises.esp
[X] luxurygommorahpenthouse.esp
[X] Lore version.esp
[X] remains.esp
[X] PimpMyScarf_CamoRetext.esp
[X] MikotoBeauty.esp
[X] Rustyhwys.esp
[X] Fallout 1 and 2 ambient musics v0.1.esp
[X] ProspectorSaloonArt.esp
[X] FNVIcons.esp
[X] Alsatian NCR Guard Dogs.esp
[X] FOOK - New Vegas.esp
[X] FOOK - New Vegas DLCs.esp
[X] Weapon Mod Expansion.esp
[X] XFO - 3ac - rarity - ammo - hard.esp
[X] XFO - 3bc - rarity - caps - hard.esp
[X] XFO - 3cc - rarity - meds - hard.esp
[X] XFO - 4a - Perks - Paths.esp
[X] XFO - 4ba - Perks - Perk Every Level.esp
[X] XFO - 5a - SPECIAL & Stats Rebalance.esp
[X] XFO - 5c - Skills - Better Med Surv Repair.esp
[X] XFO - 5db - Skills - Sneak - hard.esp
[X] XFO - 5eb - Skills - Barter - Hard.esp
[X] NVLogicalRepairLists.esp
[X] Nevada Skies.esp
[X] Ambient Temperature - Nevada Skies.esp
[X] DU-CurrencyExchangeRates.esp
[X] IHATECAZADORES.esp
[X] LogicalReputationShifts.esp
[X] realistic headshots.esp
[X] Better Binoculars High.esp
[X] psychoelf lev stripping - NMWR.esp
[X] psychoelf perk lev stripping - dcf.esp
[X] Improved Throwing1.esp
[X] Tag Skills Improved.esp
[X] RefinedCasinoFigures.esp
[X] LightweightSanitizer.esp
[X] return_deadmoney.esp
[X] NoFastTravel_NV.esp
[X] Plausible Starting Outfit.esp
[X] Vault_34_better_reactor.esp
[X] FalloutNV_Beloved_Books.esp
[X] A Case of Devil's Gold.esp
[X] Real Time Entry Skills.esp
[X] TANKP.esp
[X] exp for repair.esp
[X] CassAlcoholAnesthesia.esp
[X] The Strip Credit Check 5000.esp
[X] Craft Overhaul 1.1.esp
[X] Military NV Backpacks - Blank's Container Patch.esp
[X] Military NV Backpacks - Vendor Script Replenish.esp
[X] RangerHD.esp
[X] PMT - QuieterVats.esp
[X] PMT - Gravity Kills.esp
[X] PMT - Destructible Ordnance.esp
[X] PMT - Nastier mines and grenades.esp
[X] PMT - Reduced Challenge Notifications.esp
[X] PMT - Reduced Ammo and Chems.esp
[X] PMT - Sound Fixes.esp
[X] PMT - Slower Backward Movement.esp
[X] FNNsysNV.esp
[X] Wasteland Explorer.esp
[X] Weekend Never Dies.esp
[X] Oven Cooking.esp
[X] SG_AlcoholChallenge.esp
[X] NPCsUseAmoo.esp
[X] Free Wild Wasteland.esp
[X] DU-AmmoSmith.esp
[X] Decrucifixion.esp
[X] Decrucifixion - More Victims.esp
[X] Destructibles.esp
[X] Mobile_Bus.esp
[X] ReloadCalX305.esp
[X] Light My Flare.esp
[X] XFO - 6aa - Epic Skills - Effects Over 100 (NVSE req).esp
[X] XFO - 9a - Enemies - AI revamp.esp
[X] Weight_Balance.esp
[X] ChildAtHeartPerk.esp
[X] RearmRebalance.esp
[X] PerkEveryLevel.esp
[X] NVWastelandUnlocked.esp
[X] FNV-draeath-HarsherCombat.esp
[X] EnhancedGlasses.esp
[X] TUPAM-NV.esp
[X] TUWRM.esp
[X] NVSettingsTweaks.esp
[X] NV Explosive Knockdown mod.esp
[X] NVOrganizedItems.esp
[X] Rebalance.esp
[X] ReSort.esp
[X] Arwen_NV_Realism_Core.esp
[X] WeaponModsixpanded.esp
[X] WME - Arwen Core.esp
[X] WME Replacer - FOOK.esp
[X] WME - FOOK.esp
[X] Arwen_Camera.esp
[X] Closer To Fallout - True Threshold.esp
[X] No Value Junk.esp
[X] Better Ammo Crafting.esp
[X] Survival Expansion.esp
[X] Scavenger Pro.esp
[X] ArtsAndCrafts.esp
[X] XtraSpecialNV.esp
[X] XSNVBalanceTweaks.esp
[X] NV_STTraitsandPerks_Crunch - NVSE.esp
[X] SPECIAL_Fixes.esp
[X] chemsets.esp
[X] RepairKit.esp
[X] XFO - 8c - Karma Rebalance.esp
[X] KillingKarmaFix.esp
[X] NVR - High Lethality.esp
[X] Dynamic Herbalism.esp
[X] Monocyte Perk +1HP for 5 mins.esp
[X] SimpleScarcity9b.esp
[X] Reload_Prospector.esp
[X] PMT - Explosive Robots.esp
[X] PMT - Reduced Caps and Item Value.esp
[X] Imp's More Complex Needs.esp
[X] Ambient Temperature - IMCNNV.esp
[X] Imp's More Complex Needs - JA - SORTED.esp
[X] IMCNNV - Sorted.esp
[X] IMCN-Tales.esp
[X] StealthBoyEnhanced.esp
[X] CONELRAD 640-1240.esp
[X] BartertownDangerous.esp
[X] XFO - 8a - Cripple & Body Part Revamp.esp
[X] XFO - 7a - UnMSG - Empty.esp
[X] XFO - 7b - UnMSG - Karma (Incl Sounds).esp
[X] XFO - 7c - UnMSG - Sneak Status.esp
[X] GameplayRevised-Encumbrance.esp
[X] Intelligence_And_Skill_Points_Normal.esp
[X] Active Wasteland - Vanilla Replacements.esp
[X] NoSneakWarnings.esp
[X] noloadscreentext.esp
[X] Community Bugfix Compilation Patch.esp
[X] BetterGamePerformanceV4.
194 mods active
X] FalloutNV.esm
[X] DeadMoney.esm
[X] Caliber.esm
[X] Ambient Temperature.esm
[X] FalloutNV_Beloved_Books.esm
[X] Military NV Backpacks.esm
[X] Active Wasteland.esm
[X] Decrucifixion.esm
[X] Weapon Mod Expansion.esm
[X] IWS-Core.esm
[X] Brahmin Bess.esm
[X] FOOK - New Vegas.esm
[X] Lings.esm
[X] FOOK - New Vegas DLCs.esm
[X] MikotoBeauty.esm
[X] New Vegas Redesigned.esm
[X] AWorldOfPain(LowLoot).esm
[X] decwithreg.esm
[X] War Never Changes.esm
[X] Tales from the Burning Sands.esm
[X] ReactivePeople.esm
[X] iHUD.esm
[X] War Never Changes.esp
[X] NewVegasBounties.esp
[X] Reload.esp
[X] Rearm.esp
[X] Rearm test.esp
[X] Goodsprings Spruced Up.esp
[X] The Courier's CollectionV2.esp
[X] CounterfeitBottleCap.esp
[X] NewerVegas.esp
[X] Bobblehunt.esp
[X] MAC.esp
[X] The Chase.esp
[X] TreasureHunt.esp
[X] searchlight_eng.esp
[X] Story of ol' McCartney.esp
[X] Wasteland Defense.esp
[X] lexx-q-warehouse-war-house.esp
[X] GSJohnnyQuest.esp
[X] Machienzo-Behold The Riches.esp
[X] SilentStruggleV1.esp
[X] TheCollector.esp
[X] BCFollowersClinic.esp
[X] SunValley.esp
[X] SadiesSundries.esp
[X] 1stCultOfTheSphere.esp
[X] Identity Crisis Part 2 - Long Night.esp
[X] TheHiddenTreasure.esp
[X] [Candora's Box] Maps & Idles.esp
[X] Reactive People II - Sneak & Diversion.esp
[X] Reactive People - Ultimatum.esp
[X] Followers Ready To Fight.esp
[X] Selected NPCs Revamped NV.esp
[X] Improved Faces v1.esp
[X] My Cloth Collection NV.esp
[X] CompanionDisguises.esp
[X] luxurygommorahpenthouse.esp
[X] Lore version.esp
[X] remains.esp
[X] PimpMyScarf_CamoRetext.esp
[X] MikotoBeauty.esp
[X] Rustyhwys.esp
[X] Fallout 1 and 2 ambient musics v0.1.esp
[X] ProspectorSaloonArt.esp
[X] FNVIcons.esp
[X] Alsatian NCR Guard Dogs.esp
[X] FOOK - New Vegas.esp
[X] FOOK - New Vegas DLCs.esp
[X] Weapon Mod Expansion.esp
[X] XFO - 3ac - rarity - ammo - hard.esp
[X] XFO - 3bc - rarity - caps - hard.esp
[X] XFO - 3cc - rarity - meds - hard.esp
[X] XFO - 4a - Perks - Paths.esp
[X] XFO - 4ba - Perks - Perk Every Level.esp
[X] XFO - 5a - SPECIAL & Stats Rebalance.esp
[X] XFO - 5c - Skills - Better Med Surv Repair.esp
[X] XFO - 5db - Skills - Sneak - hard.esp
[X] XFO - 5eb - Skills - Barter - Hard.esp
[X] NVLogicalRepairLists.esp
[X] Nevada Skies.esp
[X] Ambient Temperature - Nevada Skies.esp
[X] DU-CurrencyExchangeRates.esp
[X] IHATECAZADORES.esp
[X] LogicalReputationShifts.esp
[X] realistic headshots.esp
[X] Better Binoculars High.esp
[X] psychoelf lev stripping - NMWR.esp
[X] psychoelf perk lev stripping - dcf.esp
[X] Improved Throwing1.esp
[X] Tag Skills Improved.esp
[X] RefinedCasinoFigures.esp
[X] LightweightSanitizer.esp
[X] return_deadmoney.esp
[X] NoFastTravel_NV.esp
[X] Plausible Starting Outfit.esp
[X] Vault_34_better_reactor.esp
[X] FalloutNV_Beloved_Books.esp
[X] A Case of Devil's Gold.esp
[X] Real Time Entry Skills.esp
[X] TANKP.esp
[X] exp for repair.esp
[X] CassAlcoholAnesthesia.esp
[X] The Strip Credit Check 5000.esp
[X] Craft Overhaul 1.1.esp
[X] Military NV Backpacks - Blank's Container Patch.esp
[X] Military NV Backpacks - Vendor Script Replenish.esp
[X] RangerHD.esp
[X] PMT - QuieterVats.esp
[X] PMT - Gravity Kills.esp
[X] PMT - Destructible Ordnance.esp
[X] PMT - Nastier mines and grenades.esp
[X] PMT - Reduced Challenge Notifications.esp
[X] PMT - Reduced Ammo and Chems.esp
[X] PMT - Sound Fixes.esp
[X] PMT - Slower Backward Movement.esp
[X] FNNsysNV.esp
[X] Wasteland Explorer.esp
[X] Weekend Never Dies.esp
[X] Oven Cooking.esp
[X] SG_AlcoholChallenge.esp
[X] NPCsUseAmoo.esp
[X] Free Wild Wasteland.esp
[X] DU-AmmoSmith.esp
[X] Decrucifixion.esp
[X] Decrucifixion - More Victims.esp
[X] Destructibles.esp
[X] Mobile_Bus.esp
[X] ReloadCalX305.esp
[X] Light My Flare.esp
[X] XFO - 6aa - Epic Skills - Effects Over 100 (NVSE req).esp
[X] XFO - 9a - Enemies - AI revamp.esp
[X] Weight_Balance.esp
[X] ChildAtHeartPerk.esp
[X] RearmRebalance.esp
[X] PerkEveryLevel.esp
[X] NVWastelandUnlocked.esp
[X] FNV-draeath-HarsherCombat.esp
[X] EnhancedGlasses.esp
[X] TUPAM-NV.esp
[X] TUWRM.esp
[X] NVSettingsTweaks.esp
[X] NV Explosive Knockdown mod.esp
[X] NVOrganizedItems.esp
[X] Rebalance.esp
[X] ReSort.esp
[X] Arwen_NV_Realism_Core.esp
[X] WeaponModsixpanded.esp
[X] WME - Arwen Core.esp
[X] WME Replacer - FOOK.esp
[X] WME - FOOK.esp
[X] Arwen_Camera.esp
[X] Closer To Fallout - True Threshold.esp
[X] No Value Junk.esp
[X] Better Ammo Crafting.esp
[X] Survival Expansion.esp
[X] Scavenger Pro.esp
[X] ArtsAndCrafts.esp
[X] XtraSpecialNV.esp
[X] XSNVBalanceTweaks.esp
[X] NV_STTraitsandPerks_Crunch - NVSE.esp
[X] SPECIAL_Fixes.esp
[X] chemsets.esp
[X] RepairKit.esp
[X] XFO - 8c - Karma Rebalance.esp
[X] KillingKarmaFix.esp
[X] NVR - High Lethality.esp
[X] Dynamic Herbalism.esp
[X] Monocyte Perk +1HP for 5 mins.esp
[X] SimpleScarcity9b.esp
[X] Reload_Prospector.esp
[X] PMT - Explosive Robots.esp
[X] PMT - Reduced Caps and Item Value.esp
[X] Imp's More Complex Needs.esp
[X] Ambient Temperature - IMCNNV.esp
[X] Imp's More Complex Needs - JA - SORTED.esp
[X] IMCNNV - Sorted.esp
[X] IMCN-Tales.esp
[X] StealthBoyEnhanced.esp
[X] CONELRAD 640-1240.esp
[X] BartertownDangerous.esp
[X] XFO - 8a - Cripple & Body Part Revamp.esp
[X] XFO - 7a - UnMSG - Empty.esp
[X] XFO - 7b - UnMSG - Karma (Incl Sounds).esp
[X] XFO - 7c - UnMSG - Sneak Status.esp
[X] GameplayRevised-Encumbrance.esp
[X] Intelligence_And_Skill_Points_Normal.esp
[X] Active Wasteland - Vanilla Replacements.esp
[X] NoSneakWarnings.esp
[X] noloadscreentext.esp
[X] Community Bugfix Compilation Patch.esp
[X] BetterGamePerformanceV4.
194 mods active
Thank you very much.