@P40 On further investigation, the issue seems to be to do with the video quality on both cameras. If I set this to 1080P, then video playback from memory works. If I set this to 3MP on the C210 or...

I have just purchased a new C210 and an external C320WS. On both, if I do a manual video record, it saves a video file into the Memory section and I can see the thumbprints perfectly showing an image...