The Preclusions tag for the Xeno Anthropology Center is currently using the DisplayName of the improvements:
<Preclusions>
<Improvement>Xeno Anthropology Center</Improvement>
<Improvement>Universal Outreach Center</Improvement>
<Improvement>Future Studies Center</Improvement>
</Preclusions>
It should be using the InternalName instead:
<Preclusions>
<Improvement>XenoAnthropology</Improvement>
<Improvement>UniversalOutreach</Improvement>
<Improvement>FutureStudies</Improvement>
</Preclusions>