Hey all,

In the backend member section, some members are throwing a null reference exception. It's only some members that are affected by this and so far all my searches have turned up empty as to what could be the cause.

At /umbraco/members/editMember.aspx?id=11513 (Referred by: http://localhost/umbraco/umbraco.aspx): System.NullReferenceException: De objectverwijzing is niet op een exemplaar van een object ingesteld.     bij umbraco.controls.ContentControl.OnInit(EventArgs e)     bij System.Web.UI.Control.InitRecursive(Control namingContainer)     bij System.Web.UI.Control.AddedControl(Control control, Int32 index)     bij System.Web.UI.ControlCollection.Add(Control child)     bij umbraco.cms.presentation.members.EditMember.Page_Load(Object sender, EventArgs e)     bij System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)     bij System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)     bij System.Web.UI.Control.OnLoad(EventArgs e)     bij umbraco.BasePages.BasePage.OnLoad(EventArgs e)     bij System.Web.UI.Control.LoadRecursive()     bij System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Our umbraco version is 4.5.2

I would appreciate some help with this as it's driving me nuts.