Running an SSIS package developed in SQL Server Data Tools for Visual Studio 2013 from Visual Studio 2015
<p>The SSIS package executes fine from VS 2013 but when I try to call the .dtsx from VS 2015 I get this error:</p>

<p><em>"To run a SSIS package outside of SQL server data tools you must install Script Task of Integration Services or higher."</em></p>

<p>Here is my code in VS 2015:</p>

<p>My using statements...</p>

<pre><code>using System.Windows.Forms; 
using Microsoft.SqlServer.Dts.Runtime;
</code></pre>

<p>My Code...</p>

<pre><code>    private void button1_Click(object sender, EventArgs e)
    { 
        private string pkSSIS = @"C:\Work\Pathname_Ect";

        string error = "";
        label1.Text = "The package is executing...";
        Package pkg = null;
        Microsoft.SqlServer.Dts.Runtime.Application app;
        DTSExecResult result;
        try
        {
            app = new Microsoft.SqlServer.Dts.Runtime.Application();
            pkg = app.LoadPackage(pkSSIS, null);
            result = pkg.Execute();
            if (result == Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure)
            {
                foreach (Microsoft.SqlServer.Dts.Runtime.DtsError dt_error in pkg.Errors)
                {
                    error += dt_error.Description.ToString();
                }
                label1.Text = "Error Not Exception: " + error;
            }
            if (result == Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success)
            {
                label1.Text = "The package executed successfully";
            }
        }
        catch (Exception ex)
        {
            label1.Text = "Exception: " + ex.Message;
        }
    }
</code></pre>

<p>Config File...</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt;
&lt;configuration&gt;
    &lt;startup useLegacyV2RuntimeActivationPolicy="true"&gt;
        &lt;supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" /&gt;
    &lt;/startup&gt;
&lt;/configuration&gt;
</code></pre>

<p>I was following a tutorial (<a href="https://technologyinsightscoffee.wordpress.com/2015/10/25/how-to-call-a-ssis-package-from-net-application/" rel="nofollow">https://technologyinsightscoffee.wordpress.com/2015/10/25/how-to-call-a-ssis-package-from-net-application/</a>) and I've found a few posts relating to this error but nothing that helped resolve it for me. Any idea what I'm doing wrong?</p>