Quick-start sample app for C# doesn't work. Ideas?
<p>Need help running this sample Google+ API Quickstart w/ C# app please, using VS2015 and following directions from here: <a href="https://developers.google.com/+/web/samples/csharp" rel="nofollow">https://developers.google.com/+/web/samples/csharp</a></p>

<p>I have so far:</p>

<ol>
<li><p>Enabled the Google API and played with it in OAuth2.0 Playground.</p></li>
<li><p>Set <a href="http://localhost:4567" rel="nofollow">http://localhost:4567</a> as an Authorized JavaScript origin.</p></li>
<li><p>Cloned the "googleplus/gplus-quickstart-csharp" repository in Github found here: <a href="https://github.com/googleplus/gplus-quickstart-csharp" rel="nofollow">https://github.com/googleplus/gplus-quickstart-csharp</a></p></li>
<li><p>Changed the client ID and secret to what I was given from the Google developer's website.</p></li>
<li><p>Tried to build but ran into NuGet build errors, so I deleted the NuGet completely and had all the target references re-downloaded and then rebuilt the project. Everything compiled.</p></li>
<li><p>Ran the project. Here I can clearly see the Google+ button but when I click on it, nothing happens!  Also made sure pop-ups work in my browser.  I've tried Firefox, Chrome, and IE.</p></li>
</ol>

<p>Any idea why clicking the button does nothing? There is a pop-up that I am expecting to see as the guide suggests but it never appears. I feel like I followed the directions well...</p>

<p>My code is up in a public Github repository here (client secret is reset): <a href="https://github.com/ForeverCodingAndLearning/googleplus-quickstart-csharp" rel="nofollow">https://github.com/ForeverCodingAndLearning/googleplus-quickstart-csharp</a></p>

<p>Please help or comment with suggestions as to where a beginner with this would go wrong. Thanks.</p>