[please help me, I get a Exception, In 4.1.3 and 4.1.1 and 4.0.1]

 

 I have installed three version about iReport, but every version had happend the same exception, I do not know how to do!

 

When I start the iReport.exe , it will get a exception

 There is Exception : 

 

 

java.lang.NoClassDefFoundError: Could not initialize class net.sf.jasperreports.engine.util.JRProperties

at com.jaspersoft.ireport.designer.options.IReportPanel.load(IReportPanel.java:3097)

at com.jaspersoft.ireport.designer.options.IReportOptionsPanelController.update(IReportOptionsPanelController.java:64)

at org.netbeans.modules.options.CategoryModel$Category.update(CategoryModel.java:378)

at org.netbeans.modules.options.OptionsPanel.setCurrentCategory(OptionsPanel.java:177)

at org.netbeans.modules.options.OptionsPanel.access$100(OptionsPanel.java:95)

[catch] at org.netbeans.modules.options.OptionsPanel$1$1.run(OptionsPanel.java:154)

at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)

at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)

at java.awt.EventQueue.access$000(EventQueue.java:101)

at java.awt.EventQueue$3.run(EventQueue.java:666)

at java.awt.EventQueue$3.run(EventQueue.java:664)

at java.security.AccessController.doPrivileged(Native Method)

at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)

at java.awt.EventQueue.dispatchEvent(EventQueue.java:675)

at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)

at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)

at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)

at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)