Fatal error when enabling RealName module

When enabling RealName module, the /users/%user page breaks and presents the Fatal error:

Fatal error: Cannot use object of type stdClass as array in .../includes/theme.inc on line 963

963 of includes.inc is

if (isset($variables['#theme']) || isset($variables['#theme_wrappers'])) {
    $element = $variables;
    $variables = array();
    if (isset($info['variables'])) {
      foreach (array_keys($info['variables']) as $name) {
        if (isset($element["#$name"])) {
          $variables[$name] = $element["#$name"];
        }
      }
    }
    else {
      $variables[$info['render element']] = $element;
    }
  }

how do i fix my user profiles?