error: 234 SSL enabled start the negotiation

I'm trying to send a file via FTPS. I'm a mid-level VB programmer but I've not dealt with FTPS or SSL before.

Code:

---

Dim thereConnectionString As String = "ftp://" & thereHost & "/%2F/" & therePath & "/" & hereFileName

Try

  Dim clsRequest As System.Net.FtpWebRequest = DirectCast(System.Net.WebRequest.Create(thereConnectionString), System.Net.FtpWebRequest)
  clsRequest.Credentials = myURLInfo.Credentials
  clsRequest.Method = System.Net.WebRequestMethods.Ftp.UploadFile
  clsRequest.EnableSsl = True

  ' read in file...
  Dim bFile() As Byte = System.IO.File.ReadAllBytes(hereFilePathName)

  ' upload file...
  Dim clsStream As System.IO.Stream = clsRequest.GetRequestStream()

  clsStream.Write(bFile, 0, bFile.Length)
  clsStream.Close()
  clsStream.Dispose()

---

The GetRequestStream is throwing the exception:

The remote server returned an error: 234 SSL enabled start the negotiation.

Any help would be greatly appreciated.

Monday morning bump.