private NXtreeDelegate(){
          log.info("into Nxtree wihtout session object");
        try {
            this.theSession = (Session)SessionFactory.get("Session");

            PartCollection partList =theSession.parts();
            PartCollection.Iterator itr;
            

            for (itr = partList.iterator(); itr.hasNext();)
            {
                loadedParts=loadedParts+1;
                log.info("loaded parts:"+loadedParts);
                Part partObject = (Part) itr.next();
                //suchen nach einem ontoPfad
                String path =null;
                try {
                    path = partObject.getStringAttribute("OntoPath");
                    ontoDocumentIRI = IRI.create(path);
                    log.info("Objekt kennt eine COPE Ontologie");
                } catch (Exception e) {
                    // Interessiert nicht
                }

                //log.info("Geöffnete Teile: " + partObject.journalIdentifier());

            }
            log.info("NXConnector geladen mit "+ loadedParts+" Teilen");
        } catch (Exception e) {
            log.warn("NXConnector init Fehlgeschagen: "+e);
        }
    }



log4j: 

2015-02-03 16:53:59 INFO  SystemERR:75 - Date: 0302 -Time:165359
2015-02-03 16:53:59 INFO  SystemERR:205 - directrypath : C:/Users/sundares/workspace/OWL
2015-02-03 16:53:59 INFO  SystemERR:205 - //127.0.0.1:1099/NXSession
2015-02-03 16:53:59 INFO  SystemERR:205 - //127.0.0.1:1099/NXgui
2015-02-03 16:53:59 INFO  SystemERR:205 - ui.selection manager 0
2015-02-03 16:53:59 INFO  treeDelegate:87 - into Nxtree with session object
2015-02-03 16:53:59 WARN  treeDelegate:118 - NXConnector init Fehlgeschagen: java.lang.RuntimeException: nxopen.NXException: Object no longer exists
2015-02-03 16:53:59 ERROR treeDelegate:268 - Feher beim Part Iterator: java.lang.RuntimeException: nxopen.NXException: Object no longer exists
2015-02-03 16:53:59 INFO  SystemERR:62 - Date: 0302 -Time:165359
2015-02-03 16:53:59 INFO  ProductWriterABS:89 - Loaded ontology: file:/C:/Users/sundares/workspace/OWL/COPE_tripod.owl
2015-02-03 16:53:59 INFO  SystemERR:205 - done.
2015-02-03 16:54:01 INFO  copeReason:79 - Resoner geladen

Main issue: 
2015-02-03 16:53:59 WARN  treeDelegate:118 - NXConnector init Fehlgeschagen: java.lang.RuntimeException: nxopen.NXException: Object no longer exists
2015-02-03 16:53:59 ERROR treeDelegate:268 - Feher beim Part Iterator: java.lang.RuntimeException: nxopen.NXException: Object no longer exists