About 2 weeks ago, I replaced All-in-One-SEO with Yoast's SEO plug-in. Yesterday, when checking my Google WMT, I found errors with my xml sitemap, calling out issues with re-directs. I narrowed that down to the author archives, and disabled them, but when I tried to check my sitemap, I got a 404 error. Strangely, WMT shows that it has received sitemap_index.xml, but when I expand that, it is comprised of:
all of which show 404s.
Frankly, I'm a bit lost here, and any help would be very much appreciated. Site is http://docsheldon.com