A Sharepoint developer was working on a sharepoint farm I manage and "suddenly" the page stopped working. Last thing he did was change the navigation. Subsites work fine.
The following errors show up in the log:
SPMicrofeedStore.UpdateFromListItem: Expected field 'HashTags' not found in list item, verify fieldList paramter.
Application error when access /SitePages/Forsiden.aspx, Error=Object reference not set to an instance of an object.
at Microsoft.SharePoint.WebControls.AspMenu.OnMenuItemDataBound(MenuEventArgs e)
at System.Web.UI.WebControls.Menu.DataBindRecursive(MenuItem node, IHierarchicalEnumerable enumerable)
at System.Web.UI.WebControls.Menu.DataBindRecursive(MenuItem node, IHierarchicalEnumerable enumerable)
at System.Web.UI.WebControls.Menu.DataBindItem(MenuItem item)
at System.Web.UI.WebControls.Menu.PerformDataBinding()
at System.Web.UI.WebControls.HierarchicalDataBoundControl.PerformSelect()
at System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound()
at System.Web.UI.WebControls.Menu.EnsureDataBound()
at Microsoft.SharePoint.WebControls.AspMenu.OnPreRender(EventArgs e)
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
System.NullReferenceException: Object reference not set to an instance of an object.
at Microsoft.SharePoint.WebControls.AspMenu.OnMenuItemDataBound(MenuEventArgs e)
at System.Web.UI.WebControls.Menu.DataBindRecursive(MenuItem node, IHierarchicalEnumerable enumerable)
at System.Web.UI.WebControls.Menu.DataBindRecursive(MenuItem node, IHierarchicalEnumerable enumerable)
at System.Web.UI.WebControls.Menu.DataBindItem(MenuItem item)
at System.Web.UI.WebControls.Menu.PerformDataBinding()
at System.Web.UI.WebControls.HierarchicalDataBoundControl.PerformSelect()
at System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound()
at System.Web.UI.WebControls.Menu.EnsureDataBound()
at Microsoft.SharePoint.WebControls.AspMenu.OnPreRender(EventArgs e)
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()