I'm really puzzle by this. I've been creating sitemaps with the Standalone Sitemap Generator for quite some time now without any problems. Now, however, it crawls the site, indexes about 38000 pages as usual but then the sitemap creation process always stops around 82-86% completion. There is no error message or anything. It just goes into auto-restart after 120 seconds of inactivity and then counts up to the 80 something percent and then stops. There have been no changes to our site. Any idea what could have caused this?