[Plugin: Intelliwidget Featured Posts] No posts in select specific posts box

I’m experimenting with the IntelliWidget plugin. I have it installed on a test site.

I dropped the widget into my primary sidebar. When I open the configuration box, in the Post Selection section, I select the Post box. However, NO posts appear in the Select Specific Posts box. When I choose Page, I can see my pages.

I’m working with the Genesis Framework Metro theme. WordPress 3.9.1.

Any help would be appreciated.