Hello,
When using <p:birt we must prefix the path of a design report with /, if not we get an exception because the repot is not found...
<p:birt xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:s="http://jboss.com/products/seam/taglib" xmlns:p="http://jboss.com/products/seam/birt" designType="run" format="pdf" designName="/testencoded2.rptdesign" title="JBoss Birt Encoding Test">
// Open report design design = birtReportEngine.openReportDesign(sc.getRealPath("/") + reportName);
design = birtReportEngine.openReportDesign(sc.getRealPath("/"+ reportName));