Autoblog plugin is adding featured image and post image

I have installed autoblog on my server. I have activated the Featured image option on the autoblog plugin. However, when I use it, the software adds the featured image and a post image. I dont have the post image option activated.

Here is the feed: http://marblelife.com/feed/ and here is an example of where I tested it: http://marblelife-sandiego.com/coatings-or-impregnators/.

What can I do to just get the featured image and not both?