Sub-themes .tpl file is not overwriting parents
Please try to see to follow same folder structure in base theme which parent theme have for .tpl files. Also check if you added base template file e.g. node.tpl.php for node--type.tpl.php link and also implement THEME_preprocess_page.

function THEME_preprocess_page(&amp;$variables){
  if (isset($variables['node']-&gt;type)) {
   // If the content type's machine name is "my_machine_name" the file
   // name will be "page--my-machine-name.tpl.php".
   $variables['theme_hook_suggestions'][] = 'page__' . $variables['node']-&gt;type;
   }
}