This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
The exact conditions that cause this exception to appear are difficult to pinpoint. In a previous installation of NetBeans 4.0 beta 2 this exception began occurring after a couple of days of use, the occurrances became so frequent that the IDE became unusable. I reinstalled the IDE this morning and everything was working fine until I attempted to use the "Fix Imports" utility in the Java editor. The imports appeared to rearrange correctly, but the IDE then immediately threw this exception. Annotation: Exception occurred in Request Processor javax.jmi.reflect.InvalidObjectException: Object with MOFID ACE02376-1880-11D9-8C2D-C8D78399AA77:0000000000000D4C no longer exists. at org.netbeans.mdr.handlers.BaseObjectHandler._getDelegate(BaseObjectHandler.java:322) at org.netbeans.mdr.handlers.BaseObjectHandler.refImmediatePackage(BaseObjectHandler.java:282) at org.netbeans.mdr.util.EventNotifier$Clazz.collectListeners(EventNotifier.java:532) at org.netbeans.mdr.util.EventNotifier$Instance.collectListeners(EventNotifier.java:560) at org.netbeans.mdr.util.EventNotifier$Association.collectListeners(EventNotifier.java:499) at org.netbeans.mdr.util.EventNotifier$Abstract.firePlannedChange(EventNotifier.java:409) at org.netbeans.modules.javacore.jmiimpl.javamodel.JavaClassImpl.setSuperClass(JavaClassImpl.java:232) at org.netbeans.jmi.javamodel.JavaClass$Impl.setSuperClass(Unknown Source) at org.netbeans.modules.javacore.jmiimpl.javamodel.JavaClassImpl.matchPersistent(JavaClassImpl.java:468) at org.netbeans.modules.javacore.jmiimpl.javamodel.SemiPersistentElement.updatePersistent(SemiPersistentElement.java:278) at org.netbeans.modules.javacore.jmiimpl.javamodel.SemiPersistentElement.matchMember(SemiPersistentElement.java:544) at org.netbeans.modules.javacore.jmiimpl.javamodel.SemiPersistentElement.processMembers(SemiPersistentElement.java:440) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.matchPersistent(ResourceImpl.java:188) at org.netbeans.modules.javacore.jmiimpl.javamodel.SemiPersistentElement.updatePersistent(SemiPersistentElement.java:278) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.updateMetadata(ResourceImpl.java:581) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.directUpdate(ResourceImpl.java:574) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.checkUpToDate(ResourceImpl.java:479) at org.netbeans.modules.javacore.jmiimpl.javamodel.ResourceImpl.updateFromDataObject(ResourceImpl.java:385) at org.netbeans.modules.javacore.ExclusiveMutex.parseIfNeeded(ExclusiveMutex.java:218) at org.netbeans.modules.javacore.ExclusiveMutex.enter(ExclusiveMutex.java:137) at org.netbeans.mdr.NBMDRepositoryImpl.beginTrans(NBMDRepositoryImpl.java:232) at org.netbeans.modules.java.JavaEditor$2.run(JavaEditor.java:226) at org.openide.util.Task.run(Task.java:136) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:330) [catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:686)
If the occurances are so frequent try to exit IDE and remove the folder var/cache/mdrstorage in your userdir. It should help. It would be nice to know some '100%' steps to reproduce this exception.
*** This issue has been marked as a duplicate of 49830 ***
Reorganization of java component