When I encode a file using DivX and I preview it in Windows Explorer (Thumbnail view), the preview image is all green. Nothing, just a green screen. Any ideas on how to get the actual preview image to work ?

If it matters, I encode with VideoMach or VirtualDub, and the latest DivX codec.

i think i read that the latest version fixes this... but then again, you're using the latest, so i guess not.

It could just be the first frame of your movie that is green.
Use virtualDub and strip out the first frame or so.
Delete the thumbs.db file and when you browse to your your movie, a new thumbnail will be created for it.

Hope that works

Well the first frame wasnt green, it seemed to "add" a green frame to start it. I restored codec defaults and deleted "thumbs.db" as you said, and re-encoded the old files that added a green frame and taking the first 25 frames off, on default settings. Seems to work...