I'm hoping that someone can help me with a query on the use of a video capture box (DIGITECH QV-3090). I bought one of these items a year or two ago and I haven't tried using it for some time.

I managed to get it to do what I wanted when I last used it but this time I'm having a problem. I've reinstalled everything and the image runs OK on my computer but when I try to do a snapshot nothing seems to happen. Where do the images go? Am I pushing the buttons in the wrong sequence? Please help me as I'm at my wit's end having spent more than a few hours on this. I'm obviously missing something and the instructions aren't any help whatsoever....

I want to contribute pictures to this site but I'm clearly not smart enough.