I know some video files that come encrypted won't allow you to seek (jump to any specified point by moving the slide bar), but I have a video file that I've had for a while now that I've always been able to use seek on that no longer allows it. It's very strange. I can still seek with all my others videos. Tried it with several media players all the same result.

It's like the part needed for seeking for that specific file is somehow lost.

Any ideas? I can download it again...but like to know.