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I am using ASP Forms not MVC
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Just a simple restart fixed the problem.
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Just started working with Visual Studio 2013 Express web. &nbsp;I create a responsive web site the other day. &nbsp;Each day I have been trying to learn more about making changes to the layout. &nbsp;Tonight, I added one addition menu item to the default menu items.<br />
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&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;li&gt;&lt;a runat=&quot;server&quot; href=&quot;~/&quot;&gt;Home&lt;/a&gt;&lt;/li&gt;<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;li&gt;&lt;a runat=&quot;server&quot; href=&quot;~/About&quot;&gt;About&lt;/a&gt;&lt;/<wbr />li&gt;<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;li&gt;&lt;a runat=&quot;server&quot; href=&quot;~/Daily_Living&quot;&gt;Dail<wbr />y Living&lt;/a&gt;&lt;/li&gt;<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;li&gt;&lt;a runat=&quot;server&quot; href=&quot;~/Contact&quot;&gt;Contact&lt;/<wbr />a&gt;&lt;/li&gt;<br />
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The next time I ran it (Debug --&gt; Start Debugging), I get 2 errors. &nbsp;Both errors are the same: &quot;External Component has thrown an exception.&quot; &nbsp;Sheesh!? &nbsp;Just because I added a menu item? &nbsp;I took the menu item out, but I still get the two errors.
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Just started working with Visual Studio 2013 Express web.  I create a responsive web site the other day.  Each day I have been trying to learn more about making changes to the layout.  Tonight, I added one addition menu item to the default menu items.

                        <li><a runat="server" href="~/">Home</a></li>
                        <li><a runat="server" href="~/About">About</a></li>
                        <li><a runat="server" href="~/Daily_Living">Daily Living</a></li>
                        <li><a runat="server" href="~/Contact">Contact</a></li>

The next time I ran it (Debug --> Start Debugging), I get 2 errors.  Both errors are the same: "External Component has thrown an exception."  Sheesh!?  Just because I added a menu item?  I took the menu item out, but I still get the two errors.

VS2013 -- External component has thrown an exception

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications