Tue Feb 05 12:03:38 CET 2002: java.util.ConcurrentModificationException: Index ObjectsByClasses has been modified since iterator was created.
java.util.ConcurrentModificationException: Index ObjectsByClasses has been modified since iterator was created.
        at org.netbeans.mdr.persistence.btreeimpl.btreeindex.BtreeListByKey$BtreeListByKeyIterator.checkModCount(BtreeListByKey.java:201)
        at org.netbeans.mdr.persistence.btreeimpl.btreeindex.BtreeListByKey$BtreeListByKeyIterator.hasNext(BtreeListByKey.java:126)
        at org.netbeans.mdr.storagemodel.LiveCollection$LiveIterator.hasNext(LiveCollection.java:185)
        at org.netbeans.mdr.storagemodel.StorableClass.deleteRecursive(StorableClass.java:344)
        at org.netbeans.mdr.storagemodel.StorablePackage.deleteRecursive(StorablePackage.java:166)
        at org.netbeans.mdr.storagemodel.StorablePackage.delete(StorablePackage.java:146)
        at org.netbeans.mdr.handlers.PackageProxyHandler.refDelete(PackageProxyHandler.java:228)
        at org.netbeans.modules.mdrtoolkit.looks.reflect.actions.DeleteObjectAction.performAction(DeleteObjectAction.java:53)
        at org.openide.util.actions.NodeAction.performAction(NodeAction.java:180)
        at org.openide.util.actions.NodeAction.actionPerformed(NodeAction.java:171)
        at org.netbeans.core.ModuleActions$1.run(ModuleActions.java:105)
        at org.openide.util.Task.run(Task.java:152)
[catch] at org.openide.util.RequestProcessor$ProcessorThread.run(RequestProcessor.java:622)