Potential problem XSS

Line 108: Potential problem: drupal_set_message() only accepts filtered text, be sure all !placeholders for $variables in t() are fully sanitized using check_plain(), filter_xss() or similar. (Drupal Docs)
drupal_set_message(t('The Rubik theme requires the !tao base theme in order to work properly.', array('!tao' => l('Tao', 'http://code.developmentseed.org/tao'))), 'warning');