Something must have popped up while recording (I presume this is a Video Demo)? I never had that issue. Can you mention the version you are using as found under Help, About Captivate?
I have the same problem.
My hardware is intel i5, GeForce 940 mx and 8 GB of ram.
I am having the exact same issue: https://youtu.be/9Ra--cpJ8ss
Did you ever find a resolution? I have the 2019 release of Captivate.
I've recorded several times with no problem, then this started happening about a month ago, so I can't do videos anymore.
Very frustrating. I've tried restarting, closing all other windows, nothing works so far.
You have to check the settings of that video, it seems to be protected and cannot be public.
it's unlisted now - I finally discovered the solution - I had it set to record my webcam (which I wasn't using and my laptop, with the webcam, was closed). Once I unchecked that, no problem!