Unknown file format (DIV3)

[svaya]

I ripped the movie 'The Pianist' myself and that isn't my first rip I do.
But it is the first time that I get an error on a movie I ripped and it is also the first time I see this error.
Like the topic already mentioned, the error says that I need a div3 codec or something like that. I don't get video nor audio.
I'm using Windows XP.
I already browsed hours on the net and couldn't find a solution.
A lot of people claiming that when you download this or that file would help you. Somehow those codecs aren't really helping me because then my BSPlayer crashes and I need to re-install. Not the result I wanted.

Hoping to find a solution on this forum.
You are my only hope...