Imports Microsoft.sqlserver.dts.pipeline Does Not Work

I have been trying to follow/implement the examples in the following help topics (thanks to Jamie for these links).

Building Packages Programmatically
(http://msdn2.microsoft.com/en-us/library/ms345167.aspx)
Connecting Data Flow Components Programmatically
(http://msdn2.microsoft.com/en-us/library/ms136086.aspx)

The problem I am having is that MainPipe is not recognized as a valid type in my Script task, even though I have the imports statements that are listed in the example. I get the message "Error 30002: Type 'MainPipe' is not defined". The other and related problem is that when I type "imports microsoft.sqlserver.dts", the intellisense offers only two choices: {}Runtime and {}Tasks. I don't see any choice for Pipeline. Can anyone tell what I am missing? It seems to be some kind of configuration/installation issue, but I have no idea how to resolve it. I have tried this on 3 different machines, with both the RTM SQL 2005 standard edition, and with SP2 installed, all with the same result. Any help is appreciated

Here is my code:


' Microsoft SQL Server Integration Services Script Task

' Write scripts using Microsoft Visual Basic

' The ScriptMain class is the entry point of the Script Task.

Imports System

Imports System.Data

Imports System.Math

Imports Microsoft.SqlServer.Dts.Runtime

Imports Microsoft.SqlServer.Dts.Pipeline

Imports Microsoft.SqlServer.Dts.Pipeline.wrapper

Imports Microsoft.SqlServer.Dts.



Public Class ScriptMain

Public Sub Main()

'

Dim package As Microsoft.SqlServer.Dts.Runtime.Package = _

New Microsoft.SqlServer.Dts.Runtime.Package()

Dim e As Executable = package.Executables.Add("DTS.Pipeline.1")

Dim thMainPipe As Microsoft.SqlServer.Dts.Runtime.TaskHost = _

CType(e, Microsoft.SqlServer.Dts.Runtime.TaskHost)

Dim dataFlowTask As MainPipe = CType(thMainPipe.InnerObject, MainPipe)


Dts.TaskResult = Dts.Results.Success

End Sub

End Class