java.lang.NullPointerException
   at org.openide.util.EditableProperties.store(EditableProperties.java:212)
   at org.netbeans.core.startup.preferences.PropertiesStorage.save(PropertiesStorage.java:227)
   at org.netbeans.core.startup.preferences.NbPreferences.flushSpi(NbPreferences.java:166)
   at org.netbeans.core.startup.preferences.NbPreferences$1$1.run(NbPreferences.java:70)
   at org.netbeans.core.startup.preferences.PropertiesStorage$3.run(PropertiesStorage.java:319)
   at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:122)
   at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:539)
   at org.netbeans.core.startup.preferences.PropertiesStorage.runAtomic(PropertiesStorage.java:317)
   at org.netbeans.core.startup.preferences.NbPreferences$1.run(NbPreferences.java:66)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1407)
   at org.netbeans.core.startup.preferences.NbPreferences.asyncInvocationOfFlushSpi(NbPreferences.java:160)
   at org.netbeans.core.startup.preferences.NbPreferences.putSpi(NbPreferences.java:125)
   at java.util.prefs.AbstractPreferences.put(AbstractPreferences.java:234)
   at org.netbeans.core.startup.preferences.NbPreferences.put(NbPreferences.java:133)
   at org.netbeans.modules.autoupdate.updateprovider.AutoupdateCatalogFactory.createUpdateProvider(AutoupdateCatalogFactory.java:132)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:0)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.netbeans.core.startup.layers.BinaryFS$AttrImpl$MethodAndParams.invoke(BinaryFS.java:604)
   at org.netbeans.core.startup.layers.BinaryFS$AttrImpl.getValue(BinaryFS.java:537)
   at org.netbeans.core.startup.layers.BinaryFS$BFSBase.getAttribute(BinaryFS.java:383)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:900)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:838)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:896)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:838)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:765)
   at org.openide.loaders.InstanceDataObject$Ser.instanceCreate(InstanceDataObject.java:1370)
   at org.openide.loaders.InstanceDataObject.instanceCreate(InstanceDataObject.java:818)
   at org.openide.loaders.FolderLookup$ICItem.getInstance(FolderLookup.java:584)
   at org.openide.util.lookup.AbstractLookup$R.allInstances(AbstractLookup.java:999)
   at org.openide.util.lookup.ProxyLookup$R.computeResult(ProxyLookup.java:548)
   at org.openide.util.lookup.ProxyLookup$R.allInstances(ProxyLookup.java:488)
   at org.openide.util.lookup.ProxyLookup$R.computeResult(ProxyLookup.java:548)
   at org.openide.util.lookup.ProxyLookup$R.allInstances(ProxyLookup.java:488)
   at org.netbeans.modules.autoupdate.services.UpdateUnitProviderImpl$LookupListenerImpl.allInstances(UpdateUnitProviderImpl.java:461)
   at org.netbeans.modules.autoupdate.services.UpdateUnitProviderImpl.getUpdateUnitProviders(UpdateUnitProviderImpl.java:250)
   at org.netbeans.modules.autoupdate.services.UpdateUnitProviderImpl.refreshProviders(UpdateUnitProviderImpl.java:296)
   at org.netbeans.modules.autoupdate.services.UpdateUnitProviderImpl$LookupListenerImpl.resultChanged(UpdateUnitProviderImpl.java:454)
   at org.openide.util.lookup.AbstractLookup$NotifyListeners.run(AbstractLookup.java:521)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1369)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1907)