I am now having the same issue as well.
CP2019 v. 220.127.116.116
Published, project cache, and working folder are all on local C: drive
I can build projects and record software simulations but video demo crashs immediately after selecting it. Side note: I can open existing video demos to make edits, but triggering to record a new one is what causes the crash.
This is an old thread. I will branch your question, because it is not about CP9 but about CP2019.
Moreover the Video Demo has changed.
In the eLearning Community I had a similar question today.. When I suggested to disconnect the webcam, the problem was solved. There seems to have been a conflict with the webcam driver.
Mloreover if you are on Windows, do you run Captivate with the feature 'Run as Administrator'?