title: JasperReports: got empty Details band when compiling .jrxml to .jasper files
body: <p>I have a well working program, which uses <em>JasperReports</em>. It uses <code>JRBeanCollectionDataSource(List items)</code> to populate the rows with data, but if I compile the <em>jrxml</em> file either with <code>JasperCompileManager.compileToFile()</code> or with <em>iReport</em> I see only parameters populated without rows. </p>
  
  <p>Does anyone have had such a problem? I don't receive any errors or exceptions.</p>