FMS Video won't show

I am new to FMS, but seem to have gotten it installed correctly. The problem is when I am try to to run a video.

I can see the connection being made, the web page opens and the playlist displays. The first frame of the video shows in the thumbnail. I select a video and the player opens but the video never shows. Everything else seems to be OK. The only thing I can see is that the bandwidth spikes and then goes to zero.

Main.asc is there and the videos are in the right place. If I move them, they don’t show in the thumb.

I set the MIME to handle .flv files, but that has no effect.

I have tried several videos on three different machines and all show the same problem. What am I missing? This thing is driving me nuts!