[Plugin: screenshot] Plugin half crooked?

Hi, your’s seems a pretty nice plugin, but It does not work as promised.

Half the links in the sidebar under the dashboard section do not work, fortunately the dimension setting page works, the other give a not found 404.

But most importantly the plugin does not deliver the screenshot of the page requested, in the sense that subpages of the main url will return the main URL screenshot, no matter what subpage is inserted in the shortcode.

Please can you advise?

http://wordpress.org/extend/plugins/screenshot/