Recently during a Project Server 2010 installation I encountered the above message.  With a bit of research was able to locate the steps below.  In our case it worked.

 

  1. Open Regedit.
  2. Find the key “HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSession Manager”.
  3. Rename the “PendingFileRenameOperations” value to “PendingFileRenameOperations2”.
  4. Restart your machine and then try again.