Galileo,
There was no image attached to the post. After you upload it, you have to hit the checkbox to insert it into the post.
Not sure if what you're looking to do is possible with JFBConnect (would need to see the image). However, in the custom module you had created, you likely can just remove the script inclusion for the all.js file and things should start to work. Since JFBConnect already includes that file in a very compatible way, the code you're using -should- work (can't guarantee). You can always move to using our easy-tags, but if you have something that works, you may just want to stick with it.
Hope that helps,
Alex