Solved Minutemen - Vassalizing Abernathy Farm seems like it is using Conqueror mechanics.

[JoeDaFalloutNoob]

I have the Minuteman faction pack installed to learn the system before I start a BoS playthrough. I unlocked Abernathy Farm as a settlement, and wanted to align it with my outpost at Red Rocket. I twice attempted a Vassal raid. The first time there were gunners there, the second time raiders, and both times the Abernathy family and all of the settlers were hostile and attacking. My outpost has a Minuteman flag and my recruitment is for Weapons and Medicine, so I am presuming the faction pack is installed correctly. Is there some intermediary step required to tell Conqueror that you are trying to be the white knights?

We are the Minutemen and Militarized Minutemen are installed.

 

[Takarazuka]

Might want to post on the Nexus forums and ask him. Nothing has changed in the code related to that and I know he had it working. Could be a mod conflict most likely. What other mods are you using?

 

[JoeDaFalloutNoob]

Spoiler: Mod List

*Unofficial Fallout 4 Patch.esp
*HUDFramework.esm
*ArmorKeywords.esm
*SimSettlements.esm
*SimSettlements_RotC_Complex_AbernathyFarm.esl
*SimSettlements_RotC_Complex_Castle.esl
*SimSettlements_RotC_Complex_CoastalCottage.esl
*SimSettlements_RotC_Complex_CountyCrossing.esl
*SimSettlements_RotC_Complex_Covenant.esl
*SimSettlements_RotC_Complex_CroupManor.esl
*SimSettlements_RotC_Complex_DaltonFarm.esl
*SimSettlements_RotC_Complex_EchoLake.esl
*SimSettlements_RotC_Complex_EgretToursMarina.esl
*SimSettlements_RotC_Complex_FinchFarm.esl
*SimSettlements_RotC_Complex_Graygarden.esl
*SimSettlements_RotC_Complex_GreentopNursery.esl
*SimSettlements_RotC_Complex_HangmansAlley.esl
*SimSettlements_RotC_Complex_JamaicaPlain.esl
*SimSettlements_RotC_Complex_KingsportLighthouse.esl
*SimSettlements_RotC_Complex_LongfellowsCabin.esl
*SimSettlements_RotC_Complex_MechanistsLair.esl
*SimSettlements_RotC_Complex_Murkwater.esl
*SimSettlements_RotC_Complex_Nordhagen.esl
*SimSettlements_RotC_Complex_OberlandStation.esl
*SimSettlements_RotC_Complex_OutpostZimonja.esl
*SimSettlements_RotC_Complex_RedRocket.esl
*SimSettlements_RotC_Complex_SanctuaryHills.esl
*SimSettlements_RotC_Complex_Slog.esl
*SimSettlements_RotC_Complex_Somerville.esl
*SimSettlements_RotC_Complex_StarlightDrivein.esl
*SimSettlements_RotC_Complex_SunshineTidings.esl
*SimSettlements_RotC_Complex_TaffingtonBoathouse.esl
*SimSettlements_RotC_Complex_TenpinesBluff.esl
*SimSettlements_RotC_Complex_Vault88.esl
*SimSettlements_RotC_Complex_VisitorCenter.esl
*SimSettlements_RotC_Complex_WarwickHomestead.esl
*JamaicaPlainPathing.esm
*WorkshopFramework.esm
*Lucid's Texture Upgrades.esl
*Robot Home Defence.esm
*SettlementKeywords.esm
*TrueStormsFO4.esm
*XDI.esm
*TurretManual.esl
*NoSharedDogmeatTemplate.esp
*SettlementMenuManager.esp
*SimSettlements_CityPlanPack_ContestEntries.esp
*AdvBubbleTurretSet-Real.esp
*AkaInvisibleFurniture.esp
*AmmoCrafting.esp
*EAMR.esp
*ValdacilsItemSorting-00-ValsPicks-DLCVersion-VanillaWeight.esp
*Armorsmith Extended.esp
*Armorsmith Extended NightVision.esp
*ASA.esp
*ASA AE.esp
*AzarPonytailHairstyles.esp
*bb_vendors.esp
*SimpleSmokes.esp
*WorkshopRearranged.esp
*MysticPinesRetirementSettlement.esp
*MojaveImports.esp
*SuperMutantRedux.esp
*SuperMutantRedux_AE-WSE-VIS-G-Insanity_AIO_Patch.esp
*ValdacilsItemSorting - WastelandImports TAGS.esp
*BetterCompanions.esp
*g2m_Workshop_Nexus.esp
*BetterJunkFences.esp
*BetterSettlersNoLollygagging.esp
*HAIA With Crafting.esp
*Mod01Vault201.esp
*Build_all_Beds.esp
*Campsite.esp
*Campsite AE VIS-G.esp
*CBBE.esp
*Child Posters.esp
*CigaretteInMouth.esp
*CREAtiveClutter.esp
*Eli_Armour_Compendium.esp
*LooksMenu Customization Compendium.esp
*SimSettlements_XPAC_Conqueror.esp
*OverpassOverhaul.esp
*W.A.T.Minutemen.esp
*Leaders Of The Commonwealth.esp
*Vault-Tec Workshop Overhaul.esp
*tkzBOS_FactionPack.esp
*ZebrinasWorkshopDevices.esp
*DoorsNotWalls.esp
*IMG_Castle_Wall_Patches.esp
*CWSS Redux.esp
*DESTROY_ALL_Cricket_v2_1.00.esp
*dinoshelf.esp
*dinoshelf_retex.esp
*DiverseChildren.esp
*Dogmeat A True Companion Normal.esp
*DV-Deadly Vertibirds.esp
*DV-Armored Pilots.esp
*Eli Armor Compendium AE Patch.esp
*EveryonesBestFriend.esp
*MilitarizedMinutemen.esp
*Faction Addon Minutemen.esp
*Superboss Swan.esp
*EvilViking13_PatchworkSanctuaryBridge.esp
*Farming Resources.esp
*FilledBrahminFeedTroughs.esp
*FilledDinerCounters.esp
*FO4Hotkeys.esp
*FO4Hotkeys VIS-G.esp
*Gritty Subway Stations.esp
*HN66-SiriusArmor.esp
*Hoamaii_SleepTogetherAnywhere.esp
*Hoamaii_SleepTogetherAnywhere AE VIS-G.esp
*Housekeeping.esp
*IcebreakerCDO-Settlements.esp
*ImmersiveVendors.esp
*KSHairdos.esp
*LooksMenu.esp
*LovingCait.esp
*LovingCurie_1.0.3b.esp
*THBrows.esp
*LovingPiper.esp
*ManufacturingExtended.esp
*MoraelinManufacturingInc.esp
*Motoko Hair.esp
*mso_sms.esp
*Multiple Floors Sandboxing.esp
*NMC Bundle VERY HIGH.esp
*Northland Diggers.esp
*NukaFridge_Test1.esp
*NukaRadBans.esp
*OCDecorator.esp
*OCDecorator - No Experience.esp
*OCDecoratorDLC.esp
*OCDispenser.esp
*Orphans.esp
*Passthrough.esp
*Pet - Call -Feed Dogmeat.esp
*Pet - Call - Feed Dogmeat VIS-G.esp
*Power Conduits and Pylons Overhaul - SKE.esp
*Quieter Settlements - Contraptions.esp
*Quieter Settlements - Vanilla.esp
*Quieter Settlements - Wasteland Workshop.esp
*RRTV_RobotModelKits.esp
*ruined_handmadeturrets.esp
*SalvageBeacons.esp
*Settlement Menu Manager VIS-G.esp
*SettleObjExpandPack.esp
*SettlementObjExpandPack VIS-G.esp
*SettleObjExpandPack-AllLightShadowEnabler.esp
*Settler Sandbox Overhaul.esp
*SimpleSmokes VIS-G AE.esp
*Skip New Game Intro.esp
*SkjAlert_All_DLC.esp
*Slocum's Joe AWKCR VIS-G.esp
*Snappy_HouseK.esp
*strong_PA.esp
*strong_PA - AWKCR.esp
*SuperMutantRedux_ArmorSmithExtended.esp
*The Eyes Of Beauty.esp
*TransferSettlements.esp
*TransferSettlements VIS-G.esp
*True Storms VIS-G.esp
*TrueStormsFO4-FarHarbor.esp
*TrueStormsFO4-FarHarborExtraRads.esp
*TrueStormsFO4-GlowingSeaExtraRads.esp
*V88MRI.esp
*ValiusHDTextures4K.esp
*Vault88_Front_Spawn.esp
*VltElevatorDLC.esp
*WestTekTacticalOptics.esp
*WestTekTacticalOptics AE VIS-G.esp
*Better Cooking Stations.esp
*Better Cooking VIS-G.esp
*Northland Diggers New.esp
*Better Vendor Stalls.esp
*FlaconOil_BA2_Upto4K_Part2.esp
*FlaconOil_BA2_Upto4K_Part3.esp
*InvisibleFurniture VIS-G.esp
*LongerPowerLines3x.esp
*NPC's Use Grenades.esp
*Swinging Meat Bags.esp
*TrueStormsFO4-EarlierSunsets.esp
*TrueStormsFO4-EarlierSunsetsFH.esp
*MoreCookingStations - Reg&Prewar.esp
*Search and Destroy.esp
*FO4 Landscape Overhaul HD AIO.esp
*Scrap Everything - Ultimate Edition.esp
*BetterSettlers.esp
*BetterSettlersCleanFacePack.esp
*BetterSettlersCCAPack2.0.esp
*BetterSettlersMortalSoldiersPack.esp

Okay, I went into the game this morning and performed the following steps -
Loaded pre-outpost and pre-Abernathy as Settlement save
Saved
Exited and completely uninstalled Conqueror and Minutemen Faction pack
Loaded the game and saved.
Exited and downloaded/reinstalled Conqueror and MFP (which had an update this morning)
Loaded the game, finshed Abernathy's quest, gained settlement
Went to Red Rocket and reestablished the Outpost for the Minutement
Vassal raid on Abernathy

This time things were different; the Abernathys stayed green to me, but were hostile to the Minutemen during the first part of the attack. There were Raiders there, and the Settlers were hostile. Abernathys took a knee, and then got up and were neutral to the Minutemen but the Raiders and Settlers fought to the death. After the battle was over, I got a notice "Abernathy Farm has sent supplies and caps to your Outpost at Nuka World." When I got back to Red Rocket, the raid board no longer listed Abernathy as an option. EDIT: I'd forgotten to mention that I went into the MCM and set the 'Vassals develop as Settlements' mode to ON prior to the raid.

 

[JoeDaFalloutNoob]

I will continue this on the author's bug report page.