Hi Vayra! Long time lurker, first time poster.
I ran into this problem that caused a crash every time I mouse over a communist cloud fleet.
Spoiler
579973 [Thread-4] ERROR com.fs.starfarer.combat.CombatMain - java.lang.RuntimeException: Hullmod communist_clouds not found!
java.lang.RuntimeException: Hullmod communist_clouds not found!
at com.fs.starfarer.loading.specs.HullVariantSpec.getAllMods(Unknown Source)
at com.fs.starfarer.prototype.Utils.o00000(Unknown Source)
at com.fs.starfarer.settings.StarfarerSettings$1.computeNumFighterBays(Unknown Source)
at com.fs.starfarer.api.plugins.impl.CoreAutofitPlugin.fitFighters(CoreAutofitPlugin.java:918)
at com.fs.starfarer.api.plugins.impl.CoreAutofitPlugin.doFit(CoreAutofitPlugin.java:363)
at com.fs.starfarer.api.impl.campaign.fleets.DefaultFleetInflater.inflate(DefaultFleetInflater.java:406)
at com.fs.starfarer.campaign.fleet.CampaignFleet.inflateIfNeeded(Unknown Source)
at com.fs.starfarer.ui.impl.StandardTooltipV2.createFleetTooltip(Unknown Source)
at com.fs.starfarer.campaign.C.o00000(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)