I just upgraded from Movie Studio 13 to 17. After I add some video to the timeline, titles, etc., make some edits, when I click playback - the cursor stops moving across the timeline. I have never seen this in v13. Makes editing impossible.

I can click on the timeline and it will re-position the cursor and start playing from that point, it just does not move. And, when I move it with the arrow keys, the frames in the preview window do not change.

Can someone help me understand what I've clicked to make this stop working?