zmena fps v AC3 zvuku - problem

[TomiZiwan]

potreboval by som pomoct so zmenou fps v 5.1 AC3 zvuku z 25 na 23.976 fps.
postupoval som podla tohto navodu http://www.hd.ic.cz/faq.php?cat_id=10 , presne cez ten soft ktory je tam odporucany (BeHappy).
problem mam v tom ze mi vyhodi neznamu chybu:

Starting job Title_01_01.ac3->Title_01_25-23,976.ac3
Error: BeHappy.AviSynthException: Script error: there is no function named "NicAc3Source"
at BeHappy.AviSynthClip..ctor(String func, String arg, AviSynthColorspace forceColorspace, AviSynthScriptEnvironment env)
at BeHappy.Encoder.encode()