Thanks for this plugin, it is working great in most regards.
I am using posts that are imported in to WP via an RSS feed from a forum. Some of the posts have images embedded in the content that have generated URL's, without an extension such as .gif, .jpg etc.
<img class="thumbnail" src="http://mywebsite.com/attachment.php?attachmentid=3276&stc=1&thumb=1&d=1328038729"
And for these posts this plugin is not generating a thumbnail in WP.
Is it possible to fix this?