Anyone finding that the free online generator is not picking up pages on their sites should try our search engine robot simulator at http://www.xml-sitemaps.com/se-bot-simulator.html
This will show you how your pages are seen by search engine robots and what links there are in the page.
Common reasons for not picking up additional pages are:
2. pages from sub-domains (they are seen as different sites) ie www.mysite.com
is not the same as subdomain.mysite.com
3. Similarly if your start page is www.mysite.com
and your additional pages are mysite.com/newpage.html these won't be picked up either as again www.mysite.com
and mysite.com are seen as different sites.