Fatal:com.fs.starfarer.api.campaign.starsystemAPI.initStar(Ljava/lang/String;Ljava/lang/String;F)Lcom/fs/starfarer/api/campaign/PlanetAPI;
Check the starsector.log for more info.
The log is as follows: (note, i only took the end part, as I imagine that's where the problem is, if you need more, Glad to offer it.
34379 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id SCY_burstThrusters_SHIP_SYSTEM not found
34379 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id cubeboost_SHIP_SYSTEM not found
34379 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id ms_drivecharger_SHIP_SYSTEM not found
34379 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id eth_phasecloak_SHIP_SYSTEM not found
34379 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id flarelauncher_fighter_SHIP_SYSTEM not found
34380 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id traveldrive_SHIP_SYSTEM not found
34380 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id fox_citadelphase_SHIP_SYSTEM not found
34380 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id inferniuminjector_SHIP_SYSTEM not found
34380 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id CitadelEMPSystem_SHIP_SYSTEM not found
34380 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id SCY_hullBreaker_drone_SHIP_SYSTEM not found
34380 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id brphasecloak_SHIP_SYSTEM not found
34380 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id lucifergenerator_SHIP_SYSTEM not found
34380 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id scalarcloak_SHIP_SYSTEM not found
34380 [Thread-5] WARN com.fs.starfarer.loading.SpecStore - Description with id scalarrepulsor_SHIP_SYSTEM not found
34392 [Thread-11] INFO sound.oo0OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO - Creating streaming player for music with id [miscallenous_main_menu.ogg]
34392 [Thread-11] INFO sound.H - Playing music with id [miscallenous_main_menu.ogg]
34403 [Thread-9] INFO sound.F - Creating music buffer #1
57333 [Thread-5] ERROR com.fs.starfarer.combat.CombatMain - java.lang.NoSuchMethodError: com.fs.starfarer.api.campaign.StarSystemAPI.initStar(Ljava/lang/String;Ljava/lang/String;F)Lcom/fs/starfarer/api/campaign/PlanetAPI;
java.lang.NoSuchMethodError: com.fs.starfarer.api.campaign.StarSystemAPI.initStar(Ljava/lang/String;Ljava/lang/String;F)Lcom/fs/starfarer/api/campaign/PlanetAPI;
at data.scripts.world.citadel.Citadel.generate(Citadel.java:40)
at data.scripts.world.citadel.DefendersGen.generate(DefendersGen.java:17)
at data.scripts.CITModPlugin.initCIT(CITModPlugin.java:22)
at data.scripts.CITModPlugin.onNewGame(CITModPlugin.java:72)
at com.fs.starfarer.campaign.save.CampaignGameManager.super(Unknown Source)
at com.fs.starfarer.title.TitleScreenState.dialogDismissed(Unknown Source)
at com.fs.starfarer.ui.M.dismiss(Unknown Source)
at com.fs.starfarer.ui.impl.int.dismiss(Unknown Source)
at com.fs.starfarer.campaign.save.O0oO.actionPerformed(Unknown Source)
at com.fs.starfarer.ui.interfacesuper.o00000(Unknown Source)
at com.fs.starfarer.ui.null.processInput(Unknown Source)
at com.fs.starfarer.ui.U.o00000(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$2.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
57485 [Thread-11] INFO sound.oo0OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO - Creating streaming player for music with id [miscallenous_main_menu.ogg]
57485 [Thread-11] INFO sound.H - Playing music with id [miscallenous_main_menu.ogg]