I think it's a DivX problem. from the second site:
Guest
This is a super simple fix. I just went through the same problem. all you have to do is download the divx codec. go to divx.com and download the divx codec. its free and will allow you to work. good luck guys
and
I downloaded DivX (free version) and installed it after experiencing the no video problem with .avi files and it solved it.
(hide) If you click on a person's name and then click Finished games you will have a list of games that have been completed, then click on the name of the game to get a summary of all of these games, then click on the name of the game again and you will have a game to view and analyze. (Servant) (show all tips)