Getting Error on DataGridView?

I'm getting the following error when I try to establish some column settings for an unbound DataGridView. Here is my code below.

Code:

    Private Sub FormatGrid()

        Try

            Dim col As DataGridViewColumn



            col = New DataGridViewColumn

            col.Width = 120

            dgvUsers.Columns.Add(col)



            col = New DataGridViewColumn

            col.Width = 150

            dgvUsers.Columns.Add(col)



            col = New DataGridViewColumn

            col.Width = 60

            dgvUsers.Columns.Add(col)



            col = New DataGridViewColumn

            col.Width = 410

            dgvUsers.Columns.Add(col)



        Catch ex As Exception

            MessageBox.Show("FormatGrid() - " & ex.Message)

        End Try

    End Sub

Thanks,

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