title: TEAMBUILD: error MSB4057: The target "GetXapOutputFile" does not exist in the project
body: <p>I'm getting this error trying to run my Build thru TeamBuild in TeamExplorer on Visual Studio 2008.</p>
  
  <p>On the Build Machine I installed VS SP1, Team Explorer, Silverlight 3 tools, and RIA Services.</p>
  
  <p>I can compile no problem with Visual Studio on my machine and directly on the Build Machine. But I still cant compile on thru TeamBuild because it "says" I'm missing GetXapOutputFile target.</p>
  
  <p>I checked C:\Program Files\MSBuild\Microsoft\Silverlight\v3.0\Microsoft.Silverlight.Common.targets file and it does have the GetXapOutputFile target:</p>
  
  <pre><code>&lt;!--
  ============================================================
                          GetXapOutputFile
  
  This stand-alone target returns the name of the built xap file.It
  only makes sense to call this after a build
  ============================================================
  --&gt;
  &lt;Target
      Name="GetXapOutputFile"
      DependsOnTargets="_CreateSLProperties" 
      Outputs="$(XapOutputFile)"
  /&gt;
  </code></pre>
  
  <p>Any idea what I might be missing?</p>