Not able to create DC with VM's - need urgent help

I need urgent help on following :

I have downloaded vCSA 6.0 trial version . I have installed it successfully with tiny infrastructure ( about 400 VM ) . Now i want to create the virtual machines . For this i have firstly stopped the

service vmware-vpxd stop

Then i have made changes in vpxd.cfg. Then changes i have appended are

  <simulator>

     <enabled>true</enabled>

     <datastore>

        <global>4</global>

        <local>0</local>

     </datastore>

     <initInventory>vcsim/model/configSamples/initInventory-15KVM.cfg</initInventory>
     <vcDelay>vcsim/model/configSamples/OperationDelay-15KVM.cfg</vcDelay>
   </simulator>

Then i have rebuild the database using vpxd -b and started serivce again.

I am getting errror as :

Call "PropertyCollector.RetrieveContents" for object "propertyCollector" on vCenter Server "<my_server_name>" failed

Attached the error image.

Thanks a ton in advance