[news.eclipse.platform.rcp] Empty panes or empty stacks

[mowry_889@xxxxxxxxx (mowry)]

When I drag and drop editors side by side, and I relaunch application I 
see empty panes in the editor area.

In my all editors persistable is returns null.
I fixed by removing editor stacks except first one in the workbench.xml 
file.
I was wondering are there any side effects with this approach.

Thanks,
Mowry
Here is the code:
   @Override
   public void preStartup() {
		try
		{
			IPath path = Platform.getLocation();
			String fileLocation = 
path.toFile().getAbsolutePath().concat("/.metadata/.plugins/org.eclipse.ui.workbench/workbench.xml");
	        File file = new File(fileLocation);
			DocumentBuilderFactory docFactory = 
DocumentBuilderFactory.newInstance();
			DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
			Document doc = docBuilder.parse(file);
			NodeList list = XPathAPI.selectNodeList(doc.getFirstChild(), 
"window/page/editors/editorArea/info");
			for (int i = list.getLength()-1; i > 0;i--)
			{
				Node node = list.item(i);
				node.getParentNode().removeChild(node);
			}

	        // Prepare the DOM document for writing
	        Source source = new DOMSource(doc);

	        Result result = new StreamResult(file);

	        // Write the DOM document to the file
	        Transformer xformer = 
TransformerFactory.newInstance().newTransformer();
	        xformer.transform(source, result);
			
		}
		catch(Exception e)
		{
			e.printStackTarce();
		}
   	super.preStartup();
   }