all of the picture turns green.
One of two things; its either a codec problem or its the ordering of your filters in your avisynth script both of which can cause this. For the filters you can't put them in any old order i'm afraid, and it will cause problems sometimes if you have them in the wrong order (if you hit preview it will show you if there's a problem by saying an error or displaying in green).
I would make this general recommendation, don't use Divx! Its crap, and even more of a warning, don't use divx extended functionality like deinterlace... its just shite.
Just use xvid, any reason you ain't? There's not much reason to choose divx over xvid imo.
On the Save and Encode screen, press edit and paste your avisynth script here and i'll take a look see if there's anything i spot, its definitely your filter ordering or an ffdshow/playback problem though.