I have installed Thor, but when I attempt to start it I am get an error when the Treeview.SelectedItem is being assigned a Node (or Null). It appears the SelectedItem property is Read Only. I noticed that at sometime the SelectedItem must have been Read Write, but the version of the "MSComctlLib.TreeCtrl.2" control I have it is Not. I am not sure how to determine the version number of the Treeview, or if I need to update it.

Does anyone have any suggestions on how to resolve this?