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 during playback. 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?

Windows 10Pro, 64bit, 16gb RAM, SSD - plenty of horsepower.