FeedCache Pipes will retrieve, cache and store locally a list of RSS feeds that you can then display on your WP site. This prevents multiple HTTP requests with each page load since the feeds can be read from the cache file.
Deactivate the previous version of FeedCache Pipes through your WordPress plugins menu
Upload the new feedcache-cron.rb, feedcache-pipes.php and complete lib/ directory files to your existing feedcache-pipes directory. You do not need to overwrite your existing files/ directory or the fcpipes-config.yml file.
Activate the newly uploaded plugin.
Enter the correct FCPIPES_DIR variable in the feedcache-cron.rb script