NexerelinCore NoSuchMethodError

322617 [Thread-4] INFO  com.fs.starfarer.api.impl.campaign.intel.AnalyzeEntityMissionIntel  - Created AnalyzeEntityMissionIntel: Mining Station, faction: independent
322667 [Thread-4] INFO  exerelin.campaign.CovertOpsManager  - Starting covert warfare event creation
322668 [Thread-4] INFO  exerelin.campaign.CovertOpsManager  - 	Agent faction: Scy Nation
322668 [Thread-4] INFO  exerelin.campaign.CovertOpsManager  - 	Trying action: destroyCommodities
322668 [Thread-4] INFO  exerelin.campaign.CovertOpsManager  - 	Found commodity to destroy: ore on Bolunda
322669 [Thread-4] INFO  exerelin.campaign.CovertOpsManager  - 	Launching covert action: destroyCommodities
331267 [Thread-4] INFO  com.fs.starfarer.api.impl.campaign.fleets.EconomyFleetRouteManager  - Added trade fleet route from Blakaz to Jericho
331466 [Thread-4] INFO  data.scripts.OfficerManagerEvent  - Added officer at market_system_2cc:planet_9_L5, 77 total available
331551 [Thread-4] INFO  exerelin.campaign.diplomacy.DiplomacyBrain  - Diplomacy brain for plsp considering options
332183 [Thread-4] INFO  data.scripts.OfficerManagerEvent  - Removed officer from ecec, 77 total available
334174 [Thread-4] INFO  exerelin.campaign.diplomacy.DiplomacyBrain  - Diplomacy brain for fob considering options
334823 [Thread-4] INFO  sound.oo0O  - Cleaning up music with id [Starsea.ogg]
334838 [Thread-8] INFO  sound.oo0O  - Cleaning up music with id [Mobilization.ogg]
335184 [Thread-10] INFO  sound.oo0O  - Creating streaming player for music with id [Starsea.ogg]
335185 [Thread-10] INFO  sound.null  - Playing music with id [Starsea.ogg]
335411 [Thread-4] ERROR com.fs.starfarer.combat.CombatMain  - java.lang.NoSuchMethodError: exerelin.campaign.intel.fleets.ReliefFleetIntelAlt.createEvent(Lcom/fs/starfarer/api/campaign/econ/MarketAPI;Lcom/fs/starfarer/api/campaign/econ/MarketAPI;)Lexerelin/campaign/intel/fleets/ReliefFleetIntelAlt;
java.lang.NoSuchMethodError: exerelin.campaign.intel.fleets.ReliefFleetIntelAlt.createEvent(Lcom/fs/starfarer/api/campaign/econ/MarketAPI;Lcom/fs/starfarer/api/campaign/econ/MarketAPI;)Lexerelin/campaign/intel/fleets/ReliefFleetIntelAlt;
	at exerelin.campaign.ColonyManager.processReliefFleetEvent(ColonyManager.java:807)
	at exerelin.campaign.ColonyManager.updateMarkets(ColonyManager.java:212)
	at exerelin.campaign.ColonyManager.reportEconomyTick(ColonyManager.java:1138)
	at com.fs.starfarer.campaign.CampaignEngine.reportEconomyTick(Unknown Source)
	at com.fs.starfarer.campaign.econ.reach.ReachEconomyStepper.doEndOfStepStuff(Unknown Source)
	at com.fs.starfarer.campaign.econ.reach.ReachEconomyStepper.nextFrame(Unknown Source)
	at com.fs.starfarer.campaign.econ.Economy.advance(Unknown Source)
	at com.fs.starfarer.campaign.CampaignEngine.advance(Unknown Source)
	at com.fs.starfarer.campaign.CampaignState.advance(Unknown Source)
	at com.fs.starfarer.BaseGameState.traverse(Unknown Source)
	at com.fs.state.AppDriver.begin(Unknown Source)
	at com.fs.starfarer.combat.CombatMain.main(Unknown Source)
	at com.fs.starfarer.StarfarerLauncher$1.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)