I had posted a test image and after it was online, I deleted it. It's gone. However on the homepage of the Gallery a BLANK thumbnail still exists in the "Recent Photos" area. And also in the Recent Comments area.
Look here: http://www.scifi-meshes.com/gallery/
I'm run a database check via phpmyadmin, and it's listed under the photos posted by me. I'm not sure how to fix this.