Problems with paths when site is installed not in the webserver root

I'm using Bitcache module integrated with FileFramework module. And also I installed i18n module because my site is multilangual.
And after installing this last module my links have preffixes, for ex. "http://mysite/ru/node/%" and if it is node 'file' this paths for bitcache don't work. But the paths to the files should be /bitcache/[hash], doesn't matter if the site is mysite/ node/% or mysite/ru/node/%. In my case language preffix is added in the file path. My drupal site is installed in the folder, not the webserver root.

I rewrote function bitcache_resolve_id() on bitcache.module:

  function bitcache_resolve_id($id, array $options = array('absolute' => TRUE)) {
  $url = url(BITCACHE_ALIAS . '/' . $id, $options);
  $start = true;
  while ($start)
  {
    $start = strpos($url, 'ru');
    if ($start)
    {
      $url1 = substr($url, 0, $start);
      $url2 = substr($url, $start+3);
      $url = $url1 .$url2;
    }
  }
  return $url;
  }

and now it works for me.