Got strange problem-any idea's?in desperate need of help

[fracmo2000]

I started getting strange results when converting divx movies to cvd using dvd2svcd.The 1st disk would convert fine-then would get to around 250mb(ish) for the second disk.When watching the 1st disk-there is no probelm-looks fine-sounds is in sync.2nd disk is fine then all of a sudden hits a black screen with this message up on top in red:

avisynth : division by zero at 1x106b035b

thanks for any help
cheers

[Acide ascorbique]

You probably have an ureadable frame, check with Virtual Dub and delete it. This kind of problem happen during DL.