title: 'Home' category page not working after update
body: <p>A prestashop website at version 1.4.1.4 was working with <code>category.php</code> file for category pages. The update to 1.6.0.6 unfortunatley deleted that file because it has been considered as deprecated. (<a href="https://stackoverflow.com/questions/24012022/url-structure-changed-after-cms-update">URL structure changed after CMS update</a>)</p>
  
  <p>One consequence is the change in the URL structure. </p>
  
  <p>from: </p>
  
  <blockquote>
    <p>url/category.php?id_category=6</p>
  </blockquote>
  
  <p>to : </p>
  
  <blockquote>
    <p>url/index.php?id_category=6&amp;controller=category&amp;id_lang=2</p>
  </blockquote>
  
  <p>So now, the first URL structure is  giving 404.  </p>
  
  <p><strong>The question:</strong>
  We don't know why all the category pages are working fine with the new strucure, except the page for <code>Home</code>(acceuil) category (the global parent category for all website categories). This <code>home</code> category page is giving 404 even with the new structure. In other words, the following url is not working:</p>
  
  <blockquote>
    <p>url/index.php?id_category=1&amp;controller=category&amp;id_lang=2</p>
  </blockquote>
  
  <p>If I am not wrong, Prestashop gives id=1 by default to this <code>home</code> category? What is going wrong in your point of you? Any insights are highly appreciated.</p>
  
  <p><strong>Edit based on Prestashop-Developper.co answer</strong></p>
  
  <p>When I checked my database in PhpMyAdmin:</p>
  
  <p><strong><em>After update from 1.4.1.4 to 1.6.0.6:</em></strong></p>
  
  <p>I found neither a category with id=0 nor a category with id=2. I only find the category Home with id=1 and category Root with id=104. Root is parent of Home, but the field <code>is_root_category</code> for Home is set to 1!!!! I am really not understanding anything.</p>
  
  <p><strong><em>Before update from 1.4.1.4 to 1.6.0.6:</em></strong></p>
  
  <p>There is no Root category at all, and there is no <code>is_root_category</code> field at all.</p>
  
  <p><strong><em>Note:</em></strong>
  These observations are based on the tables : ps_category, ps_category_group, ps_category_product, ps_category_shop before and after updtate =between 1.4.1.4 to 1.6.0.6.</p>