Hi,
Most likely, the pages are being created but file system permissions are not correct so it isn't able to clear the sitemap cache and therefore you don't see the new page. If you touch Web.config file it will recycle the app and clear the cache and perhaps then your pages will appear. To fix the problem you need to make the /Data and all child folders writable by the web process so it can create folders and files for cache dependency.
Hope it helps,
Joe