Hey Happy Peoples

I've got the following coming out of a LostFocus on a textbox

  Select * From Officer ;
    WHERE Alltrim(Upper(LASTNAME))+Alltrim(Upper(FIRSTNAME)) = Alltrim(Upper(lname)) + Alltrim(Upper(fname)) ;
    INTO Cursor Countit
  thisform.lblSelectPerson.Visible = .t.
  WITH thisform.cboSelectPerson
      .RowSourceType = 6
      .RowSource = "Countit.lastname, firstname, DOB, empcnty"
      .ColumnCount = 4
      .ColumnWidths = '150,150,75,150'
      .visible = .t.
      .ListIndex = 1
    ENDWITH    

Now, this is the same code (with different form element names, of course) I'm using in several places within this application. The problem is that the combobox is showing blank, and there is nothing to 'drop down'. Why is this combobox not behaving like the others?