Panel not loading Blueprints

Oh, I see, thanks for your feedback. From looking at the source code, it seems that the panel is looking for a lowercase blueprint file, so that means that all text files should be lowercase indeed.

This is the find() function from blueprint.php:

static public function find($id) {

    if(is_a($id, 'Page')) {

      $name = $id->intendedTemplate();
      $file = static::$root . DS . strtolower($name) . '.php';

      if(!file_exists($file)) {
        $name = $id->template();
        $file = static::$root . DS . strtolower($name) . '.php';

        if(!file_exists($file)) {
          $name = 'default';
        }

      }
...