There are (at least) two bugs that make certain developments impossible.
One is the requirement for a cislunar asteroid mine to develop the Cislunar Economy.
The other is that no matter how much I build plasteel factories, no plasteel is added. This makes it impossible to build the Solar Economy, which makes interstellar developments impossible.
<BuildingInfo>
<Type>BUILDING_CISLUNAR_ECONOMY</Type>
<iMaxPlayerInstances>1</iMaxPlayerInstances>
<bNeverCapture>1</bNeverCapture>
<Description>TXT_KEY_BUILDING_CISLUNAR_ECONOMY</Description>
<Civilopedia>TXT_KEY_BUILDING_CISLUNAR_ECONOMY_PEDIA</Civilopedia>
<Advisor>ADVISOR_SCIENCE</Advisor>
<ArtDefineTag>ART_DEF_BUILDING_CISLUNAR_ECONOMY</ArtDefineTag>
<MovieDefineTag>ART_DEF_MOVIE_CISLUNAR_ECONOMY</MovieDefineTag>
<fVisibilityPriority>1</fVisibilityPriority>
<MapCategoryTypes>
<MapCategoryType>MAPCATEGORY_EARTH</MapCategoryType>
</MapCategoryTypes>
<PrereqTech>TECH_LUNAR_TRADE</PrereqTech>
<iCost>9310</iCost>
<FreeBuilding>BUILDING_EFFECT_CISLUNAR_ECONOMY</FreeBuilding>
<PrereqAmountBuildings>
<PrereqBuilding>
<BuildingType>BUILDING_COMMERCIAL_SPACEPORT</BuildingType>
<iNumBuildingNeeded>5</iNumBuildingNeeded>
</PrereqBuilding>
<PrereqBuilding>
<BuildingType>BUILDING_MAGLEV_LAUNCHER</BuildingType>
<iNumBuildingNeeded>2</iNumBuildingNeeded>
</PrereqBuilding>
<PrereqBuilding>
<BuildingType>BUILDING_SOLAR_POWER_SATELLITE</BuildingType>
<iNumBuildingNeeded>3</iNumBuildingNeeded>
</PrereqBuilding>
<PrereqBuilding>
<BuildingType>BUILDING_ASTEROID_MINE</BuildingType>
<iNumBuildingNeeded>1</iNumBuildingNeeded>
</PrereqBuilding>
</PrereqAmountBuildings>
<ConstructCondition>
<And>
<Has>
<GOMType>GOM_BONUS</GOMType>
<ID>BONUS_ORGANIC_PHOTONIC_CELLS</ID>
</Has>
<Has>
<GOMType>GOM_BONUS</GOMType>
<ID>BONUS_METAMATERIALS</ID>
</Has>
<Has>
<GOMType>GOM_BONUS</GOMType>
<ID>BONUS_EXOSKELETONS</ID>
</Has>
</And>
</ConstructCondition>
<bPrereqPower>1</bPrereqPower>
</BuildingInfo>
<BuildingInfo>
<Type>BUILDING_EFFECT_CISLUNAR_ECONOMY</Type>
<Description>TXT_KEY_BUILDING_EFFECT_CISLUNAR_ECONOMY</Description>
<Civilopedia>TXT_KEY_BUILDING_CISLUNAR_ECONOMY_PEDIA</Civilopedia>
<Advisor>ADVISOR_SCIENCE</Advisor>
<ArtDefineTag>ART_DEF_BUILDING_EFFECT_CISLUNAR_ECONOMY</ArtDefineTag>
<MapCategoryTypes>
<MapCategoryType>MAPCATEGORY_EARTH</MapCategoryType>
</MapCategoryTypes>
<fVisibilityPriority>1</fVisibilityPriority>
<PrereqTech>TECH_LUNAR_TRADE</PrereqTech>
</BuildingInfo>
<BuildingInfo>
<Type>BUILDING_ASTEROID_MINE</Type>
<Description>TXT_KEY_BUILDING_ASTEROID_MINE</Description>
<Civilopedia>TXT_KEY_BUILDING_ASTEROID_MINE_PEDIA</Civilopedia>
<Advisor>ADVISOR_SCIENCE</Advisor>
<ArtDefineTag>ART_DEF_BUILDING_ASTEROID_MINE</ArtDefineTag>
<fVisibilityPriority>1</fVisibilityPriority>
<MapCategoryTypes>
<MapCategoryType>MAPCATEGORY_EARTH</MapCategoryType>
</MapCategoryTypes>
<PrereqTech>TECH_ASTEROID_MINING</PrereqTech>
<iCost>2745</iCost>
<YieldChanges>
<iYield>0</iYield>
<iYield>50</iYield>
</YieldChanges>
<PrereqInCityBuildings>
<BuildingType>BUILDING_CAPTURED_ASTEROID</BuildingType>
</PrereqInCityBuildings>
<ExtraFreeBonuses>
<ExtraFreeBonus>
<FreeBonus>BONUS_IRON_ORE</FreeBonus>
<iNumFreeBonuses>1</iNumFreeBonuses>
</ExtraFreeBonus>
<ExtraFreeBonus>
<FreeBonus>BONUS_TIN_ORE</FreeBonus>
<iNumFreeBonuses>1</iNumFreeBonuses>
</ExtraFreeBonus>
<ExtraFreeBonus>
<FreeBonus>BONUS_TITANIUM_ORE</FreeBonus>
<iNumFreeBonuses>1</iNumFreeBonuses>
</ExtraFreeBonus>
</ExtraFreeBonuses>
<bPrereqPower>1</bPrereqPower>
</BuildingInfo>