Thanks for the log. I confirm there is a problem.
While I try figuring out a fix, you can use the following work-around:
Select DC-BASS Source filter, or Haali Media Splitter AND FFDShow Audio decoder in your filter chain.
Whatever source filter that you selected could not be loaded. The system ended up loading Haali Media Splitter, which is OK, and Microsoft DTV-DVD audio decoder, which refused to work with our converter. So if you make sure that the Microsoft filter is not in the filter chain, conversion should work fine.