Cheers Mike - I'm already using these actually, the thumbnails are there on the server.
Unless I set the Featured Image in the post editor manually no thumbnail appears alongside my posts on my archive pages or next to excerpts (see the link at top of this page: http://spentest.blmsbox.co.uk/photograph)
I am using the Prototype theme (based on the Hybrid theme framework) as a parent for my child theme btw, in case this has any bearing.
On Thursday, March 29, 2012 12:25:41 PM UTC+1, Mike Little wrote:
which can be used to point at a folder of images on your server (e.g. after they have been ftp-ed there) and it will add them into the media library. I think it will also generate the thumbnails as it does so too.
If that one doesn't generate the thumbnails, you can use the regenerate thumbnails plugin