I downloaded the most updated version of the divx player and I am trying to watch videos however, the videos either play halfway through or don't play at all and I receive the following message:

The video cannot be found, and may have been removed from the server. HTTP 404

Things I have tried:

1. Divx labs. No help whatsoever (the question has been asked and gone unanswered)
2. Downloading and installing an earlier version of the divx player. The older player does not recognize the videos I want to play as divx (or even playable) files at all. It simply cannot play them.
3. Clearing history.

4. Clearing video cache.
5. Uninstalling and reinstalling the player. Does not work.

I am using Firefox 5.0 and have Windows Vista. Can anyone help?