at System.Windows.Documents.AdornerLayer.AddAdornerToVisualTree(AdornerInfo adornerInfo, Int32 zOrder)
at System.Windows.Documents.AdornerLayer.Add(Adorner adorner, Int32 zOrder)
at System.Windows.Documents.AdornerLayer.Add(Adorner adorner)
at Fluent.Backstage.Show()
Verify that you meet the following minimum requirements: See Add-SPShellAdmin.
On the Start menu, click All Programs.
Click Microsoft SharePoint 2010 Products.
Click SharePoint 2010 Management Shell.