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)
