title: Web Developer Tools option must be installed
body: <p>I have been working with Visual Studio Ultimate 2013. Today when I tried to open a solution, it tried to convert the solution and showed me error like</p>
  
  <pre><code>"The Web Developer Tools option must be installed prior to opening or creating Web projects. You can install this option by repairing your Microsoft Visual Studio installation and ensuring that 'Web Developer Tools' is checked in the list of optional components."
  </code></pre>
  
  <p>I goggled about this and tried to Modify the Visual Studio 2013 ultimate by enabling the Web Developer Tool. But here I am getting the other error like</p>
  
  <pre><code>Unable to Locate Package Source.
  </code></pre>
  
  <p>What should I do now?</p>