Error: being used by another process

I can write this file but i get and error file being used by another process. Can't seem to figure out what I have left open
Thanks

Code:

---

  Sub WriteData()
        'On Error GoTo ErrHandler
        Dim str As New IO.FileStream(CBProgramPath & "\Setup.ini", IO.FileMode.Create, IO.FileAccess.Write, IO.FileShare.ReadWrite)
        Using writer As StreamWriter = New StreamWriter(str)
            writer.WriteLine(txtCompany.Text)
            writer.WriteLine(txtContact.Text)
            writer.WriteLine(txtAddress.Text)
            writer.WriteLine(txtCity.Text)
            writer.WriteLine(txtState.Text)
            writer.WriteLine(txtZipCode.Text)
            writer.WriteLine(txtPhone.Text)
            writer.WriteLine(txtFax.Text)
            writer.WriteLine(txtEMail.Text)
            writer.Close()
            str.Close()
        End Using
        Exit Sub
        'ErrHandler:
        'MsgBox("Error Writing Setup File")
    End Sub

    Sub LoadData()
        Try
            ' Create an instance of StreamReader to read from a file.

            Dim sr As StreamReader = New StreamReader(CBProgramPath & "\Setup.ini")
            Dim line(11) As String
            Dim X As Integer
            ' Read and display the lines from the file until the end
            ' of the file is reached.
            X = 1
            Do
                line(X) = sr.ReadLine()
                'Console.WriteLine(line)
                X = X + 1
                'Transfer Data
                txtCompany.Text = line(1)
                txtContact.Text = line(2)
                txtAddress.Text = line(3)
                txtCity.Text = line(4)
                txtState.Text = line(5)
                txtZipCode.Text = line(6)
                txtPhone.Text = line(7)
                txtFax.Text = line(8)
                txtEMail.Text = line(9)

            Loop Until line Is Nothing
            sr.Close()
            sr.Dispose()
            sr = Nothing


        Catch E As Exception
            ' Let the user know what went wrong.
            Console.WriteLine("The file could not be read:")
            Console.WriteLine(E.Message)
        End Try

    End Sub

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You sure your not using it somewhere else, or maybe a previous exception still has it open?

I am only using StreamWriter/Reader one place, That is in the code I posted. I really have no idea anymore where is wrong Am I not closing soomething?