If you are using files from a Go-Pro then the CFHD wrapper may not work with Movie Studio and the file may need re-encoding as it seems to be a 12 bit video codec.
I am not sure what to recommend. Maybe others here have a solution.
Softpedia has been around for some years so should be safe.
Or, if you post the link to a shortish GoPro file (50-100mb) on Google Drive or Dropbox (or similar), we can take a look at the CFHD codec files for you.
Ray, CFHD is the codec. The wrapper is AVI or MOV.