Rendering produces no output

I am a new user of Kdenlive.

I have a segment of video I am trying to cut out of a longer video. I have set up the start and end of the zone for that segment. I then clicked on Render, and then attempted to Render the Selected Zone into multiple formats at different times: FLV (with forced progressive setting), RealVideo 800k 2 pass, as well as one of the mp4 pre-sets. Each rendering produces a file in less than a second with a size of 18K or less. I ran the Kdenlive config wizard, and all of the necessary libraries are shown to be installed.

I am not sure what I am doing wrong here. Any help would be appreciated.

Thank you.