Some users who have switched their blogs from the previous version of Blogger to the new version in beta are seeing 404 file not found errors on Blog*Spot. We have identified the problem and will be rolling out a fix shortly. Update, 6:21PM: This has been fixed for some of those affected. We’re continuing to look into remaining problems. Update, 7:44PM: We believe we’ve sorted this out for the remaining cases. Apologies to all!