Hot war deploy: Incompatible JRDefaultScriptlet

[hopesolutions]

We are using the jasper library 2.0.4 in an enterprise WAR web application which is deployed on Oracle OC4J J2EE server running on Windows Server 2003, but there is a problem whenever we deploy a new WAR to the OC4J server using the Enterprise Manager (hot deploy, and not complete server restart), the print application will stop working giving this error:

 

Code:

net.sf.jasperreports.engine.JRRuntimeException: net.sf.jasperreports.engine.JRException: Incompatible net.sf.jasperreports.engine.JRDefaultScriptlet value assigned to parameter REPORT_SCRIPTLET in the modulo_intestazione dataset.
 
     at net.sf.jasperreports.engine.fill.JRFillSubreport.prepare(JRFillSubreport.java:622) 
     at net.sf.jasperreports.engine.fill.JRFillElementContainer.prepareElements(JRFillElementContainer.java:344) 
     at net.sf.jasperreports.engine.fill.JRFillBand.fill(JRFillBand.java:346) 
     at net.sf.jasperreports.engine.fill.JRFillBand.fill(JRFillBand.java:305) 
     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillTitle(JRVerticalFiller.java:313) 
     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:247) 
     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:113) 
     at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:891) 
     at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:795) 
     at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:63) 
     at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:402) 
     at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:234) 

the only solution is to restart the server.

 

what can be done to fix this?