[Plugin: Simple Facebook Connect] Publishing does not always show picture

Hi,

first of all, great job for this plugin, it’s really great!

We are using the automatic wordpress-post-to-facebook publication option of this plugin. Sometimes it shows the picture on the facebook page, and sometimes it doesn’t. At the moment, we don’t get any clue on the reason why.
The facebook debug page shows the picture, but still it’s not shown on the facebook page.

For example :
http://www.facebook.com/shoedict?sk=wall

Each of the following links finds the picture of the post, but only one of them is shown on the facebook page:
http://developers.facebook.com/tools/debug/og/object?q=http%3A%2F%2Ffoldit.nl%2Fshoedict%2Fmenday%2Flace-up
http://developers.facebook.com/tools/debug/og/object?q=http%3A%2F%2Ffoldit.nl%2Fshoedict%2Fhappy-feet%2Ftwilight-booties

Do you have any idea?

One more question, is it possible for the thumbnail to generate a thumbnail for a post that only contains a youtube video?

Thank you very much,
Cedric

http://wordpress.org/extend/plugins/simple-facebook-connect/