This page shows the list of items being processed and queued when the Gatherer service is crawling documents. In case you encounter the “Unable to connect to Ontolica Preview Gatherer service” error when accessing the page, make sure you have completed Preview Back-end installation first. You will see the same error if the Ontolica Gatherer service is not running. In that case start the service in Windows Services console. The processing operation can also be temporarily stopped in this page. Please note that restarting the Gatherer service re-crawls content sources.