>Several tools in Thor use the TreeView control, but when opened they report an error when a line of .oTree.SelectedItem = loNode (or something similar) is encountered. It appears that the SelectedItem property is read-only. I think I may have the wrong version of the COM object installed. But every means I have investigated indicates it is the most current.
>
>Any suggestions would be welcome.
>
>P.S.
>I can fix the problem by selecting the Treeview node itself. Then the SelectedItem property will be as expected. But I prefer not to have to edit the Thor tools source code.
>
>Thanks in nadvance.

SelectedItem is not readonly property.
Maybe loNode is not a Node :-)