Hi when I try to manage comment in Backend
Components>!Joomlacomment>Manage Comment
I got this error message

Warning: JLoader::include() [function.include]: Failed opening '/libraries/includes/application.php' for inclusion (include_path='.:/:/usr/php/pear') in /libraries/loader.php on line 80

Warning: JLoader::include() [function.include]: Failed opening '/libraries/components/com_content/helpers/route.php' for inclusion (include_path='.:/:/usr/php/pear') in /libraries/loader.php on line 80

Fatal error: Class 'ContentHelperRoute' not found in /administrator/components/com_comment/plugin/com_content/josc_com_content.class.php on line 185

Other functionality in backend seems to work fine.

Does anybody have solution for that?