// we don't test whether our demo models are serializable :)
report.setDataFactory(new TableDataFactory
("default", new DefaultTableModel()));
// clear all report properties, which may cause trouble ...
final ReportProperties p = report.getProperties();
final Iterator keys = p.keys();
while (keys.hasNext())
{
String key = (String) keys.next();
if (p.get(key) instanceof Serializable == false)
{