opensim/bin/assets/MaterialsAssetSet/MaterialsAssetSet.xml

<Nini>
  <Section Name="Default Render Material">
    <Key Name="assetID" Value="968cbad0-4dad-d64e-71b5-72bf13ad051a" />
    <Key Name="name" Value="Default Render Material" />
    <Key Name="assetType" Value="57" />
    <Key Name="fileName" Value="968cbad0-4dad-d64e-71b5-72bf13ad051a.dat" />
  </Section>

</Nini>