Problem with headache software

I have been trying to get the divx ripping guide to work. I have no problems until I try to use the step that calls for the Headache software. when I select the source file is give a message that the audio files last frames has been cut off or the AC3 file is corrupt. I followed the guide to the letter and all of the movies that I have tried have done this. When it loads the file size is 0 mb to about 23 mb. I know this is not big enought. when i encode it either does work but not the whole movie or it will give an error message dealing with the Azin???