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  • Justin Grimm 56 posts 138 karma points
    Jan 25, 2013 @ 22:56
    Justin Grimm

    Unable To View Child Nodes

    I have a parent node, with about 8-10 children underneath. Recently, I have been unable to gain access to those pages in the Back Office.  I can browse to them in the front-end, and the arrow appears next to the parent folder indicating sub-pages exist. But when I click the arrow, it does not expand to show the children.  

    At first it looks to be loading, then stops and the arrow to expand disappears.  





  • Justin Grimm 56 posts 138 karma points
    Jan 28, 2013 @ 23:09
    Justin Grimm

    Took a peek at the Browser Console and it is returning an error:

    GET /umbraco/webservices/TreeDataService.ashx?rnd=1469423330d949d6b31169ba648167ed&id=1311&treeType=content&contextMenu=true&isDialog=false&rnd2=26.9

    500 Internal Server Error


    [NullReferenceException: Object reference not set to an instance of an object.]
       umbraco.cms.businesslogic.web.Document.get_UserId() +22
       umbraco.cms.presentation.Trees.BaseContentTree.GetUserActionsForNode(Document dd) +45
       umbraco.cms.presentation.Trees.BaseContentTree.Render(XmlTree& Tree) +114
       umbraco.loadContent.Render(XmlTree& tree) +19
       umbraco.presentation.webservices.TreeDataService.LoadTree(TreeRequestParams treeParams) +76
       umbraco.presentation.webservices.TreeDataService.GetXmlTree() +140
       umbraco.presentation.webservices.TreeDataService.ProcessRequest(HttpContext context) +55
       System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +100
       System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75
  • Justin Grimm 56 posts 138 karma points
    Jan 28, 2013 @ 23:16
    Justin Grimm

    Fixed! I had removed a user (manually) who still had nodes attributed.

    Just needed to update the umbracoNode table and change the nodeUser

  • Jamie Billington 6 posts 26 karma points
    Aug 16, 2016 @ 22:43
    Jamie Billington

    Hi Justin..... figured it out, it's fixed. This is a great Post!!! :-)

    thank you


  • Jamie Billington 6 posts 26 karma points
    Aug 16, 2016 @ 17:22
    Jamie Billington

    Hi Justin,

    just wondering if you could help me out with the same error you've had. I'm got this on a few pages within a site we've built.

    for example I'm getting

    I've checked the umbracoNode table and changed the nodeUser from - '2' to a new users which I've created, however still getting the same error. Can you explain what you mean about the 'nodes attributed' - is this in another column in a different table?

    thanks in advance.


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