New themes has the function of setting a "featured image" which appear next to each post in the blog index.
The native Gallery of wordpress does not display all images under the folder "uploads" (I wish there is a way to do that), but only images associated with the posts.
So I have added the images to the Nextgen Gallery. But if I select an image from the NextGen gallery, the featured image displayed is the thumb and not the full size image, although I check the "Full size" checkbox, before hitting the "use as featured image" button.
Add to this, the "Add media file from URL" function does not appear to really work for Featured images. There is simply no "use as featured image" in the "from url" window.
What to do ?