I've received this error in a report with a subreport. The subreport has a defined PrintOrder attribute of Vertical. Do you have any idea what could have caused this? (the dump is below.) Thanks net.sf.jasperreports.engine.JRRuntimeException: Unkown print order 0. at net.sf.jasperreports.engine.fill.JRFillSubreport.initSubreportFiller(JRFillSubreport.java:400) at net.sf.jasperreports.engine.fill.JRFillSubreport.evaluateSubreport(JRFillSubreport.java:369) at net.sf.jasperreports.engine.fill.JRFillSubreport.evaluate(JRFillSubreport.java:270) at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:260) at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:486) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:1427) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:729) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:256) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:114) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:911) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:833) at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:89) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:628) at org.archiviststoolkit.report.ReportUtils.printJasperReport(ReportUtils.java:109) at org.archiviststoolkit.report.ReportUtils.printReport(ReportUtils.java:79) at org.archiviststoolkit.swing.WorkSurfaceContainer$3.run(WorkSurfaceContainer.java:397) at java.lang.Thread.run(Thread.java:662)