Configure and run silent install of office in c#

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C#

Office

installer

I'm trying to configure a silent install of office as referenced here

Heres my XML file:

<Configuration>

<Add SourcePath="%PROGRAMDATA%\KnowHow Software Installer\OfficeInstall\" OfficeClientEdition="32" >
    <Product ID="O365HomePremRetail">
      <Language ID="en-us" />
    </Product>
  </Add>
<Updates Enabled="FALSE" UpdatePath="%PROGRAMDATA%\KnowHow Software Installer\OfficeInstall\" />

<Display Level="None" />

<Logging Level="Full" Name="OfficeSetup.txt" Path="%PROGRAMDATA%\KnowHow Software Installer\OfficeInstall\" />

</Configuration>

Here's my C# Code:

Process installer = new Process();
installer.StartInfo.FileName = @"F:\Visual Studio 2013\Projects\Knowhow Installer\Knowhow Installer\bin\Debug\dmc\sft\office 2013\install.exe";
installer.StartInfo.Arguments = @"/config" + Application.StartupPath + @"\dmc\sft\office 2013\Office\365hp.xml";
installer.Start();
installer.WaitForExit();
installer.Close();
MessageBox.Show("Done");

What am I doing wrong?
Thanks for any help!