help with unknown formats

[wunky]

ok first of all when i downloaded bs i tried to play the movie liar liar which is a divx, it played but with green stuff all over the screen. then i fiddled around with the options and now it says "unknown format divx" same with the matrix movie but that one says "unknown format divx 4" and on both it makes it play in rgb mode. i tried uninstalling it twice now and it is still messed up if any one can possibly help I'd be most appriciative.