Thanks, David. That was exactly the problem. I have about 700 GB on my CalDigit and had just gone over the 20% free limit (at about 115 GBs free) – so we’ve moved whatever we can off to free up an additional 40 GBs and video plays back perfectly.
This, of course, is not a long-term solution (I’ll need to find more space soon)…but for now, I can work!
Thank you again, Tracy