I assume this is happening when the hostile event tracker reaches 75, upon which some event is supposed to be revealed.
Stack trace:
java.lang.RuntimeException: Texture [hostile_activity_MINOR_EVENT] from category [events] not found
at com.fs.starfarer.settings.StarfarerSettings.Ò00000(Unknown Source)
at com.fs.starfarer.settings.StarfarerSettings$1.getSpriteName(Unknown Source)
at com.fs.starfarer.api.impl.campaign.intel.events.HostileActivityEventIntel.getSt ageIconImpl(HostileActivityEventIntel.java:503)
at com.fs.starfarer.api.impl.campaign.intel.events.BaseEventIntel.getStageIcon(BaseEventIntel.java:460)
at com.fs.starfarer.api.impl.campaign.intel.events.BaseEventIntel.createDisplayDat a(BaseEventIntel.java:442)
at com.fs.starfarer.api.impl.campaign.intel.events.BaseEventIntel.addStageDescript ionWithImage(BaseEventIntel.java:409)
at com.fs.starfarer.api.impl.campaign.intel.events.BaseEventIntel.createLargeDescr iption(BaseEventIntel.java:251)
at com.fs.starfarer.campaign.comms.v2.EventsPanel.new(Unknown Source)
at com.fs.starfarer.campaign.comms.v2.EventsPanel.actionPerformed(Unknown Source)
at com.fs.starfarer.campaign.comms.v2.EventsPanel.new.String(Unknown Source)
at com.fs.starfarer.campaign.comms.v2.EventsPanel.advanceImpl(Unknown Source)
at com.fs.starfarer.ui.thissuper.advance(Unknown Source)
at com.fs.starfarer.ui.o000.advanceImpl(Unknown Source)
at com.fs.starfarer.campaign.comms.OOoO.advanceImpl(Unknown Source)
at com.fs.starfarer.ui.thissuper.advance(Unknown Source)
at com.fs.starfarer.ui.o000.advanceImpl(Unknown Source)
at com.fs.starfarer.ui.newui.o0OO.advanceImpl(Unknown Source)
at com.fs.starfarer.ui.thissuper.advance(Unknown Source)
at com.fs.starfarer.ui.o000.advanceImpl(Unknown Source)
at com.fs.starfarer.ui.O.advanceImpl(Unknown Source)
at com.fs.starfarer.ui.newui.OO0O.advanceImpl(Unknown Source)
at com.fs.starfarer.ui.thissuper.advance(Unknown Source)
at com.fs.starfarer.ui.o000.advanceImpl(Unknown Source)
at com.fs.starfarer.ui.thissuper.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.o00000(Unknown Source)
at com.fs.starfarer.StarfarerLauncher$1.run(Unknown Source)
at java.lang.Thread.run(Thread.java:748)