title: MSB3073 error code 9009
body: <p>I have a solution on VS 2010 that has been building without errors, then out of no where the build started failing with the following error :-</p>
  
  <pre><code>**error MSB3073: The command "xcopy "C:\Program Files\Microsoft SDKs\Kinect\Developer Toolkit v1.5.1\Redist\amd64\FaceTrackLib.dll" "C:\Users\HP\Documents\FaceTrackingVisualization\Out\SingleFace\x64\Debug\" /eiycq
  xcopy "C:\Program Files\Microsoft SDKs\Kinect\Developer Toolkit v1.5.1\Redist\amd64\FaceTrackData.dll" "C:\Users\HP\Documents\FaceTrackingVisualization\Out\SingleFace\x64\Debug\" /eiycq
  :VCEnd" exited with code 9009.  C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\Microsoft.CppCommon.targets   113 6   SingleFace**
  </code></pre>
  
  <p>I have no idea, in the solutions online people say to look for spaces or indentation errors but i dont understand where to edit these changes.. the error points me to these code lines the error line is the bold line </p>
  
  <pre><code>Target Name="PostBuildEvent" Condition="'$(PostBuildEventUseInBuild)'!='false'"
  
   Message Text="Description: %(PostBuildEvent.Message)" Condition="'%(PostBuildEvent.Message)' != '' and '%(PostBuildEvent.Command)' != ''"/
  
   **Exec Command="%(PostBuildEvent.Command)$(BuildSuffix)" Condition="'%(PostBuildEvent.Command)' != ''"/**
  
    /Target
  </code></pre>