i've installed jcomment 3.26 joomla 1.5.8
when i click to manage comments i got this errors
any idea?


Warning: JLoader::include(/libraries/includes/application.php) [function.JLoader-include]: failed to open stream: No such file or directory in /libraries/loader.php on line 80

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

Warning: JLoader::include(/libraries/components/com_content/helpers/route.php) [function.JLoader-include]: failed to open stream: No such file or directory 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/local/lib/php') 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 188