System.Runtime.InteropServices.COMException was unhandled
  Message="The object identifier does not represent a valid object. (Exception from HRESULT: 0x800710D8)"
  Source="Microsoft.Web.Administration"
  ErrorCode=-2147020584

User's solution

This works!

Microsoft KB article
You cannot install Lync Server 2010 in an environment that has a FTP site in IIS:
http://support.microsoft....spid=14934

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