Image won't display?

Hi,

Just a quick one.

Really like the plug-in and think it will work nicely with the site I am making, how ever there is an issue with the image_size tag as it doesn’t seem to bring it up even though I have set featured images etc.

Any ideas on how to fix this?

Thanks

Kyle

http://ww.wp.xz.cn/extend/plugins/display-posts-shortcode/