Hi this a guide on how to make the black death mod working for feb update!!! (FIX IS FOR BOTH STEAM AND EPIC)
1. go to where your workshop files are and find ab2531_plague_mod
2. open data then BlackDeathScenario_Config
3. COPY THIS
<GameInfo>
<RuleSets>
<Row>
<RuleSetType>RULESET_SCENARIO_BLACKDEATH</RuleSetType>
<Name>LOC_BLACKDEATH_SCENARIO_NAME</Name>
<Description>LOC_BLACKDEATH_SCENARIO_TOOLTIP</Description>
<LongDescription>LOC_BLACKDEATH_SCENARIO_DESCRIPTION</LongDescription>
<VictoryDomain>BlackDeathScenario_Victories</VictoryDomain>
<GameCore>Expansion2</GameCore>
<RequiresNoTeams>1</RequiresNoTeams>
<RequiresUniqueCivilizations>1</RequiresUniqueCivilizations>
<RequiresUniqueLeaders>1</RequiresUniqueLeaders>
<MaxTurns>85</MaxTurns>
<FixedMaxTurns>1</FixedMaxTurns>
<IsScenario>0</IsScenario>
<ScenarioSetupPortrait>XP2Scenario_Browser_FG</ScenarioSetupPortrait>
<ScenarioSetupPortraitBackground>BLACKDEATH</ScenarioSetupPortraitBackground>
</Row>
</RuleSets>
<RulesetSupportedValues>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardEras" Value="ERA_MEDIEVAL"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardEras" Value="ERA_RENAISSANCE"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardEras" Value="ERA_INDUSTRIAL"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardEras" Value="ERA_MODERN"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardEras" Value="ERA_ATOMIC"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardEras" Value="ERA_INFORMATION"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardEras" Value="ERA_FUTURE"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardMapSizes" Value="MAPSIZE_SMALL"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardMapSizes" Value="MAPSIZE_MASSIVE"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardMapSizes" Value="MAPSIZE_GIGANTIC"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardMapSizes" Value="MAPSIZE_COLOSSAL"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH" Domain="StandardGameSpeeds" Value="GAMESPEED_STANDARD"/>
</RulesetSupportedValues>
<Victories>
<Row Domain="BlackDeathScenario_Victories" VictoryType="VICTORY_BLACKDEATH_SCENARIO" Name="LOC_VICTORY_BLACKDEATH_SCENARIO_NAME" Description="LOC_VICTORY_BLACKDEATH_SCENARIO_TT"/>
</Victories>
<DomainValues>
<Row Domain="BlackDeathScenario_Players" Value="RANDOM" Name="LOC_RANDOM_LEADER" Description="LOC_RANDOM_LEADER" SortIndex="1"/>
<Row Domain="BlackDeathScenario_Calendar" Value="CALENDAR_MONTHS" Name="LOC_EMPTY" Description="LOC_EMPTY" SortIndex="1"/>
</DomainValues>
<ParameterCriteria>
<Row ParameterId="VICTORY_BLACKDEATH_SCENARIO" ConfigurationGroup="Game" ConfigurationId="RULESET" Operator="NotEquals" ConfigurationValue="RULESET_SCENARIO_BLACKDEATH"/>
</ParameterCriteria>
<ParameterDependencies>
<Row ParameterId="Resources" ConfigurationGroup="Game" ConfigurationId="RULESET" Operator="NotEquals" ConfigurationValue="RULESET_SCENARIO_BLACKDEATH"/>
<Row ParameterId="StartPosition" ConfigurationGroup="Game" ConfigurationId="RULESET" Operator="NotEquals" ConfigurationValue="RULESET_SCENARIO_BLACKDEATH"/>
</ParameterDependencies>





<!-- New Hot Keys -->
<InputActions>
<Row ActionId="LensPlague" Name="LOC_OPTIONS_HOTKEY_LENSES_PLAGUE" Description="LOC_OPTIONS_HOTKEY_LENSES_PLAGUE_HELP" CategoryId="LENSES" ContextId="World" />
</InputActions>
<InputActionDefaultGestures>
<Row ActionId="LensPlague" Index="0" GestureType="KBMouse" GestureData="LOC_OPTIONS_KEY_INSERT"/>
</InputActionDefaultGestures>
</GameInfo>

Note i'm using larger map sizes mod so if you want to add other maps like duel then add
Domain="StandardMapSizes" Value="MAPSIZE_DUEL"/>
<Row Ruleset="RULESET_SCENARIO_BLACKDEATH"


4.go to maps in ab2531_plague_mod and remove this blackdeath map file

5.open the game and disable the black death scenario because it will over write the mods files

6.now you will have Black Death on normal civ gamemode also NR and GS

Notes rn I have a 60 player game with the ai with many mods and no crashes with plague killing everyone THIS TOOK ME TWO WEEKS.