Hello

I installed a new server and then put over an old installation of umbraco 4.0.4.2. I do not want the work on the new server as they should.

I can not publish new pages or deselect pages.

Do the following error:

[NullReferenceException: Object reference not set to an instance of an object.]
   umbraco.cms.businesslogic.web.Document.XmlPopulate(XmlDocument xd, XmlNode& x, Boolean Deep) +1447
   umbraco.cms.businesslogic.web.Document.XmlGenerate(XmlDocument xd) +62
   umbraco.cms.businesslogic.web.Document.PublishWithResult(User u) +1093
   umbraco.cms.presentation.editContent.Publish(Object sender, EventArgs e) +177
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   umbraco.controls.ContentControl.savePublish(Object Sender, ImageClickEventArgs e) +46
   System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e) +108
   System.Web.UI.WebControls.ImageButton.RaisePostBackEvent(String eventArgument) +118
   System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565

Can someone help me along the way where to find the error?

Have checked the permissions on files and folders, and it is true. Have tried to remove umbraco.config file from the folder "data" and the re-created as it should. But I never get the new pages or updated pages.