Continuing the discussion from Commercial Editing Failure:
Had to create a new topic since the forum wouldn't allow me to add another post.
"No more than 3 consecutive replies are allowed. Please edit your previous reply, or wait for someone to reply to you."
Appears the preview image problem is unrelated to the Channels DVR version.
I updated my other server to v2023.08.28.2117 and it has no problem generating preview images.
The server that has the issue is running on my older NAS, but is running in the same version TVE container and using the same version of Channels DVR.