I am very new to Freestyler so go easy on me.

I am running Freestyler 3.6.37 that I downloaded just yesterday.
My interface is a uDMX dongle plugged into a Donnar wireless transmitter.
My laptop is running Windows 10 64bit.
All my lights are loaded in Freestyler and I can control them manually. The system is working.
The problem is this.
First I open up the Sequence creator. I then set the lights to a scene I need. Then I hit the little + button, and finally I hit the save As button. I give it a name and tick the add button and add to Cue checkboxs and save it.
Next I go to the cue and hit the play button on the left. I does not work.
I go back and make another sequence with just one scene. And again after adding to the cue it does not play either. ie: Neither sequence will play.
Now get this.
If I make an other sequences, but this this time hit the + button TWICE, there by adding 2 identical scenes, this sequence DOES play in the Cue window.
Is it some undocumented rule of Freestyler that a sequence must have more than one scene in it?