Hi Jim,

THISFORM.Tree.SelectedItem = THISFORM.Tree.Nodes(1)

In re-reading your original post it sounds to me as if ThisForm.Tree.Nodes(1) is the item that is, for some reason, not an object? .SelectedItem will accept a node object or a logical value (as long as it's false) and it looks as if it's not getting either.

I still think your chances of solving this will be much improved if you are *sure* of the source of the error.

If you can't use ASSERTS then why not a message box:

IF TYPE("THISFORM.Tree.Nodes(1)") <> "O"
  = messagebox("Node not an object")
ENDIF


Regards,
Viv