org.openide.filesystems.FileAlreadyLockedException: Services/org-netbeans-modules-project-ui-OpenProjectList.settings
	at org.openide.filesystems.MultiFileObject.lock(MultiFileObject.java:562)
	at org.netbeans.modules.settings.ScheduledRequest.schedule(ScheduledRequest.java:83)
	at org.netbeans.modules.settings.ScheduledRequest.schedule(ScheduledRequest.java:74)
	at org.netbeans.modules.settings.convertors.SerialDataConvertor$SaveSupport.propertyChange(SerialDataConvertor.java:703)
	at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
	at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:276)
	at org.openide.util.SharedClassObject.firePropertyChange(SharedClassObject.java:424)
	at org.openide.options.SystemOption.firePropertyChange(SystemOption.java:113)
	at org.openide.options.SystemOption.readExternal(SystemOption.java:380)
	at org.openide.util.SharedClassObject$WriteReplace.readObject(SharedClassObject.java:695)
	at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1846)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
	at org.netbeans.modules.settings.convertors.XMLSettingsSupport$SettingsRecognizer.readSerial(XMLSettingsSupport.java:520)
	at
org.netbeans.modules.settings.convertors.XMLSettingsSupport$SettingsRecognizer.instanceCreate(XMLSettingsSupport.java:548)
	at
org.netbeans.modules.settings.convertors.SerialDataConvertor$SettingsInstance.instanceCreate(SerialDataConvertor.java:371)
	at org.openide.loaders.FolderLookup$ICItem.getInstance(FolderLookup.java:525)
	at org.openide.util.lookup.AbstractLookup$R.allInstances(AbstractLookup.java:901)
	at org.openide.util.lookup.ProxyLookup$R.computeResult(ProxyLookup.java:439)
	at org.openide.util.lookup.ProxyLookup$R.allInstances(ProxyLookup.java:386)
	at org.openide.util.lookup.ProxyLookup$R.collectFires(ProxyLookup.java:509)
	at org.openide.util.lookup.AbstractLookup.notifyListeners(AbstractLookup.java:466)
	at org.openide.util.lookup.AbstractLookup$R.collectFires(AbstractLookup.java:882)
	at org.openide.util.lookup.AbstractLookup.notifyListeners(AbstractLookup.java:437)
	at org.openide.util.lookup.AbstractLookup.notifyCollectedListeners(AbstractLookup.java:321)
	at org.openide.util.lookup.AbstractLookup.setPairs(AbstractLookup.java:230)
	at org.openide.util.lookup.AbstractLookup$Content.setPairs(AbstractLookup.java:1121)
	at org.openide.loaders.FolderLookup$ProxyLkp.update(FolderLookup.java:342)
	at org.openide.loaders.FolderLookup.createInstance(FolderLookup.java:176)
	at org.openide.loaders.FolderInstance.defaultProcessObjects(FolderInstance.java:742)
	at org.openide.loaders.FolderInstance.access$000(FolderInstance.java:74)
	at org.openide.loaders.FolderInstance$2.run(FolderInstance.java:628)
	at org.openide.loaders.FolderLookup.postCreationTask(FolderLookup.java:240)
	at org.openide.loaders.FolderInstance.processObjects(FolderInstance.java:626)
	at org.openide.loaders.FolderInstance$Listener.finished(FolderInstance.java:909)
	at org.openide.loaders.FolderList.createObjects(FolderList.java:653)
	at org.openide.loaders.FolderList.getObjects(FolderList.java:521)
	at org.openide.loaders.FolderList.access$200(FolderList.java:56)
	at org.openide.loaders.FolderList$ListTask.run(FolderList.java:886)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:499)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:932)