My website had a 500 error listed and said "(121 seconds with no response)". So I contacted my hosting company. They said, "I have corrected the 500 Internal server error. Also I have increased the memory_limit and max_execution_time settings in php configuration." Well, it's back up but the xml-sitemaps program will only crawl 45 pages (of 150,000) every time I try (even after I clear the data files, upload a new blank sitemap.xml file, and change the sitemap.xml permissions to 666. Do you have any idea how to fix it?