Aperture (Current version) won't populate photo place holder from Aperture Library, found one photo that would, what's wrong?

Yesterday 10-4-2011, I downloaded the Aperture App. I haven't gone to my Aperture class yet, but wanted to know why the photo place holder in an email stationary application will not accept a drag and drop from the Aperture library. I did find only one photo that actually did populate, what do you think is the difference with all the rest of my photos?

I did import all my photos and movies to Aperture from the iPhoto Library and then deleted my iPhoto Library.

Thanks