RSS feed geting error

Getting this error

Warning: require_once(../wp-load.php) [function.require-once]: failed to open stream: No such file or directory in /home/content/15/6807515/html/sems_areas/wp-content/plugins/tag-feed/tag-feed.php on line 30

Fatal error: require_once() [function.require]: Failed opening required '../wp-load.php' (include_path='.:disappointed:usr/local/php5/lib/php') in /home/content/15/6807515/html/sems_areas/wp-content/plugins/tag-feed/tag-feed.php on line 30