docmd.close does not close form

Hi
On my app I have a button aiming at opening an external form which collects some data, computes it, adds a record to the database and should return to the invoking form.
The new form is "modal" and "pop-up".

so I click the button, it opens the form, fills/computes data, and I have a "close button" (the form has no close event or button).

currently, the code  on the "close"  button is:

Private Sub btn_sairNovoExame_Click()

On Error GoTo errorTrap

    Call logMe("btn_sairNovoExame_Click", "start")
    If IsNull(Me.frm_MotivoExame) Then
        MsgBox "Motivo de Exame não preenchido"
    End If
    If IsNull(Me.frm_dataExame) Then
        MsgBox "Data de Exame não preenchida"
    End If
    Me.frm_idExame = Forms![_intData].frm_exameRecCount
    Forms![_intData].frm_exameSalvo = True
    DoCmd.RunCommand acCmdSaveRecord
    Forms("frmPaciente").frmExameLista.Requery
    Call logMe("btn_sairNovoExame_Click", "start")
    DoCmd.Close
    Exit Sub
    
errorTrap:
    MsgBox "[btn_sairNovoExame_Click]." & "[" & Err.Number & "].[" & Err.Description & "]"
    Call logMe("btn_sairNovoExame_Click", "errorTrap:" & "[btn_sairNovoExame_Click]." & "[" & Err.Number & "].[" & Err.Description & "]")
    Resume Next
    
End Sub

Select allOpen in new window

So I though that on the "Docmd.Close" it shouls close itself and control would be back to the invoking Form.

But what is happening is that (1) the form does not close, (2) the close event of the invoking form is fired and (3) the statement " DoCmd.RunCommand acCmdSaveRecord" crashes when invoking the second time

can anyone help?
/joao