SSIS Script Task - No Interface Supported


Purpose: I have an SSIS Solution with various packages, one set of these packages is currently created with a package per table due to them having different structures. The aim is to create a template package (done), update variables/table names (done), reinitialise and re-map columns, execute package for each table.

Problem: So, as you can tell, I'm up to the point that i need to reinitialise but I am unable to get to the data flow task and keep getting this error:

No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))

When I run this code:

    //// Get Data Flow task 
    TaskHost tHost = pkgOut.Executables[0] as TaskHost;
    MainPipe dataFlowTask = (MainPipe)tHost.InnerObject;

The code that I am using is below:

    public void Main()
        // Set Project Variables
        List<string> pkgVars = new List<string>

        // Get Package
        String pkgLocation = @"C:\PATH\TO\TEMPLATE\PACKAGE\a_Load_SAP_Template.dtsx";
        Application app = new Application();
        Package pkgIn = app.LoadPackage(pkgLocation, null);
        String pkgName = "DynamicPackage";

        // Add Connections (cos they're project connections and aren't stored in package)
        ConnectionEnumerator allConns = Dts.Connections.GetEnumerator();
        while ((allConns.MoveNext()) && (allConns.Current != null))

        // Convert new package to XML so we can cheat and just do a find and replace
        XmlDocument pkgXML = new XmlDocument();
        pkgIn.SaveToXML(ref pkgXML, null, null);

        // Replace strings
            // Set SAP table
            String pkgStr = pkgXML.OuterXml.ToString();
            pkgStr = pkgStr.Replace("#SAP_SRC_TABLE#", "MyF-ingSAPTables"); // Replace SAP Table Name

            // Set Project Variables references == values  -- REMEMBER TO CHECK FOR INT PARAMS zzz
            foreach (string var in pkgVars)
                pkgStr = pkgStr.Replace(@"@[$Project::" + var + @"]", @"""" + Convert.ToString(Dts.Variables[var].Value) + @"""");

        // Convert back to XML
        XmlDocument newXML = new XmlDocument();
        Package pkgOut = new Package();
        pkgOut.LoadFromXML(newXML, null);

        //// Get Data Flow task 
        TaskHost tHost = pkgOut.Executables[0] as TaskHost;
        MainPipe dataFlowTask = (MainPipe)tHost.InnerObject; // THIS IS WHERE THE CODE ERRORS

        new Application().SaveToXml(String.Format(@"D:\PATH\TO\SAVE\LOCATION\{0}.dtsx", pkgName), pkgOut, null);

        Dts.TaskResult = (int)ScriptResults.Success;


I have tried:

  • Removing everything but the data flow
  • Recreated a blank data flow
  • Recreated the package
  • Made a package in the script and created the data flow (this works but when i open the package, the data flow does not appear...might have added it wrong but it can see it when I run the TaskHost section)

I am not sure what else I can try, I have seen information that I might need to re-register some .dlls but I do not have admin access and I'd prefer not to go through the hassle for something where I do not know whether it will work.

Any help would be appreciated.


asked on Stack Overflow Sep 18, 2018 by PreQL • edited Sep 18, 2018 by PreQL

1 Answer


Fixed, was due to version difference in the .DLL that was being loaded. Loaded an older version and all went through fine.

answered on Stack Overflow Sep 21, 2018 by PreQL

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