title: The entry '' has already been added error
body: <p>I have a web.config in ASP.net giving me configuration error.</p>
  
  <pre><code> &lt;connectionStrings&gt;   
  &lt;add name="conn1" connectionString="Data Source=test;database=test;uid=test;pwd=test"/&gt;
  &lt;add name="conn2" connectionString="Data Source=123.123.1.123;database=test2;uid=test;pwd=test"/&gt;
  ...
  </code></pre>
  
  <p>It throws "The entry 'conn2' has already been added." error.  I know I only added it once.  Not sure what it is wrong with.  </p>