java.lang.NullPointerException
   at com.nanosl.lib.db.Manager.clearCache(Manager.java:271)
   at com.nanosl.nbiz.util.Data.getOperator(Data.java:25)
   at com.nanosl.nbiz.util.NTopComponent.setVisible(NTopComponent.java:50)
   at org.netbeans.modules.form.FormDesigner$FormListener.run(FormDesigner.java:2558)
   at org.netbeans.modules.form.FormLAF$3.run(FormLAF.java:333)
   at org.openide.util.Mutex.doEventAccess(Mutex.java:1376)
   at org.openide.util.Mutex.readAccess(Mutex.java:278)
   at org.netbeans.modules.form.FormLAF.executeWithLookAndFeel(FormLAF.java:316)
   at org.netbeans.modules.form.FormDesigner$FormListener.processEvents(FormDesigner.java:2538)
   at org.netbeans.modules.form.FormDesigner$FormListener.formChanged(FormDesigner.java:2504)
   at org.netbeans.modules.form.FormDesigner.updateWholeDesigner(FormDesigner.java:617)
   at org.netbeans.modules.form.FormDesigner.initialize(FormDesigner.java:271)
   at org.netbeans.modules.form.FormDesigner.loadingComplete(FormDesigner.java:1997)
   at org.netbeans.modules.nbform.FormDesignerTC.loadForm(FormDesignerTC.java:281)
   at org.netbeans.modules.nbform.FormDesignerTC.access$300(FormDesignerTC.java:87)
   at org.netbeans.modules.nbform.FormDesignerTC$PreLoadTask$1.run(FormDesignerTC.java:268)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:744)
   at java.awt.EventQueue.access$400(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:697)
   at java.awt.EventQueue$3.run(EventQueue.java:691)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:714)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)