Output and input frame rate not equal

[macdad]

The frame rate of the movie I'm trying to encode to DIVX is 23.976 I have confirmed this through DVD2AVI. I have also ripped the movie to mpeg 1 and when I did the frame rate was 23.976 yet when I use DVDx 2.0 to encode the movie to DIVX and under input settings choose 23.976 as the frame rate this warning pops up - warning the output and input frame rate are not equal a pull down (up) will be performed then when I click ok another error message pops up saying MPEG2Dec: Error during decoder initialization. This makes no sense. Can anyone help please?
Would the problem have anything to do with ASPI?

[tuntun2]

i have the same problem did u figure it out ?