title: Report preview cannot find Data source folder
body: <p>When I try to preview report in Visual Studio 2012 Designer I am getting an error:</p>
  
  <pre><code>An error occurred during local report processing.
  An unexpected error occurred in Report Processing.
  An error occurred during local report processing.
  Error in the application.
  
  Could not find a part of the path '...\bin\Debug\Data Sources\SomeDatasource.rds'.
  </code></pre>
  
  <p>Couple remarks:</p>
  
  <ol>
  <li>There is a valid data source in project. </li>
  <li>When I build project it creates flat (no folders) structure of reports, datasets and datasources in bin\Debug folder</li>
  <li>Data Source folder (along with other folders) is defined for deployment only</li>
  <li>When I removed folders in deployment settings, it is still not working</li>
  <li>It might be related to installing the latest SSDT (11.1.40403.0) yesterday... however right after installing everything worked</li>
  <li>Everything worked in this configuration so far...</li>
  </ol>