A number of star base modules (still) have the wrong prerequisites. As a result some give double effects and others are not build-able at all.

The StarbaseModuleDefs.xml file:

PrecursorStudiesCenterModule
<UpgradesFrom>XenoArcheologyInstituteModule</UpgradesFrom> should be <UpgradesFrom>PrecursorEngineeringCenter</UpgradesFrom>

InterstellarCollectorModule
<StarbaseModule>OrbitalReplicatorModule</StarbaseModule> should be <UpgradesFrom>OrbitalReplicatorModule</UpgradesFrom>

OrbitalInstituteModule
<StarbaseModule>OrbitalResearchCenterModule</StarbaseModule> should be <UpgradesFrom>OrbitalResearchCenterModule</UpgradesFrom>

ZeroGArenaModule
<StarbaseModule>ZeroGBalletModule</StarbaseModule> should be <UpgradesFrom>ZeroGBalletModule</UpgradesFrom>

FranchiseCenter
<StarbaseModule>StarbasePromenade</StarbaseModule> should be <UpgradesFrom>StarbasePromenade</UpgradesFrom>

TradeCenterModule
<UpgradesFrom>TradePost</UpgradesFrom> should be <UpgradesFrom>TradePostModule</UpgradesFrom>

TradingHubModule
<UpgradesFrom>TradeCenter</UpgradesFrom> should be <UpgradesFrom>TradeCenterModule</UpgradesFrom>

TradingMechaModule
<UpgradesFrom>TradingHub</UpgradesFrom> should be <UpgradesFrom>TradingHubModule</UpgradesFrom>