Error adding a row to a DataGridView?

I don't know why I have so much trouble with DGV's but here's another one. I keep getting the following error (see attached image) on the line of code indicated.

    Private Sub LoadTestGrid()
        Try
            Dim col As DataGridViewColumn
            Dim cell As DataGridViewTextBoxCell

            With dgvEquip
                col = New DataGridViewColumn
                cell = New DataGridViewTextBoxCell
                col.CellTemplate = cell
                col.Width = 60
                col.HeaderText = "Unit"
                .Columns.Add(col)

                col = New DataGridViewColumn
                cell = New DataGridViewTextBoxCell
                col.CellTemplate = cell
                col.Width = 80
                col.HeaderText = "Output (" & cmbVoltage.SelectedText & ")"
                .Columns.Add(col)

                col = New DataGridViewColumn
                cell = New DataGridViewTextBoxCell
                col.CellTemplate = cell
                col.Width = 80
                col.HeaderText = "Pass/Fail"
                .Columns.Add(col)
            End With

            Dim row As DataGridViewRow

            row = New DataGridViewRow
            dgvEquip.Rows.Add(row)
            row.Cells(0).Value = 20
            row.Cells(1).Value = String.Empty
            row.Cells(2).Value = String.Empty

            row = New DataGridViewRow
            dgvEquip.Rows.Add(row)
            row.Cells(0).Value = 30       <====== Receive Error Message Here
            row.Cells(1).Value = String.Empty
            row.Cells(2).Value = String.Empty

            dgvEquip.CurrentCell = dgvEquip(1, 1)
            dgvEquip.Focus()

        Catch ex As Exception
            EH.ErrorMessage = "LoadTestGrid() - " & ex.Message & "~E"
        End Try

        EH.ProcessMessages(Me, sbr, EH.ErrorMessage)
    End Sub

Select allOpen in new window

Screenshot.jpg