Started a project using Movie Studio 17.0 Build 179 it accepted any mpg video files without issues. October release of Build 204 drops the audio track of mpg file. I tried the same mpg file in Vegas 16.0 build 175 no issues. See comparitive properties from each movie studio version using the same video clip.

System Info Dell XPS 8930 desktop, Nvidia GeForce RTX 2060

Has build 204 introduced a new fault? Any Help appreciated.