Report showing 'The definition of the report is invalid' in SSDT 2015
<p>I have a <strong>SSRS 2008</strong> project with some reports, and recently we update the version, now I open the project with the <strong>SQL Server Data Tools 2015</strong>, and all is fine, I can deploy, edit, update all fine.</p>

<p>The problem comes when I want to create a new report, when I add a DataSet to the report, the preview tab says:</p>

<blockquote>
  <p>An error occurred during local report processing</p>
  
  <p>The definition of the report 'Report Name' is invalid</p>
</blockquote>

<p>and nothing more happens, I can't preview the report anymore.</p>

<p>Does anyone know if it is a issue of <em>upgrade/open</em> a SSRS 2008 solution with SSDT 2015?</p>