java.lang.ClassCastException: org.netbeans.mdr.storagemodel.LiveCollection
        at org.netbeans.mdr.handlers.AssociationHandler._handleQuery(AssociationHandler.java:109)
        at org.netbeans.modules.java.api.model.physical.SubPackages$Impl.getChildPackages(Unknown Source)
        at org.netbeans.modules.java.api.model.physical.SubPackages$Impl._query(Unknown Source)
        at org.netbeans.mdr.handlers.FeaturedHandler._handleGetR(FeaturedHandler.java:53)
        at org.netbeans.modules.java.api.model.physical.JavaPackage$Impl.getSubPackages(Unknown Source)
        at org.netbeans.modules.classmodel.PackageUpdater.syncPackages(PackageUpdater.java:150)
        at org.netbeans.modules.classmodel.PackageUpdater.updatePackage(PackageUpdater.java:143)
        at org.netbeans.modules.classmodel.PackageUpdater.updateCodebase(PackageUpdater.java:95)
        at org.netbeans.modules.classmodel.PackageUpdater.update(PackageUpdater.java:63)
        at org.netbeans.modules.classmodel.Updater$Request.run(Updater.java:49)
        at org.openide.util.Task.run(Task.java:152)
        at org.openide.util.RequestProcessor$ProcessorThread.run(RequestProcessor.java:622)