Hello,
It appears that it is very difficult tom import images as post covers when using the RSS option. I have enabled "Import Image As Post Cover" but it does not appear to work if the feed is storing the image as <enclosure url="
http://www.nasa.gov/sites/default/files/styles/1x1_cardfeed/public/thumbnails/image/katerubinsiniss.jpg?itok=2rAHcWaE" length="310145" type="image/jpeg" />
Any ideas what I can do?