You don't crawl WordPress with the XML-Sitemap Generator. You use the Google XML Sitemaps plugin, available at:
It works great, and produces an up to date sitemap.xml viewable at yoursite.com/sitemap.xml
The created sitemap sits in the root directory (where WordPress is installed). Simply download the file:
from the above website and keep it in zipped format. Then login as Administrator, go to the plugins page, and upload the zipped file. Activate it and then click "Settings" to reveal the XML Sitemap configuration program.
The plugin keeps track of additions and deletions as well. Everything will be up to date in the latest sitemap.xml format.