Can not download the post processor

Im trying to do download the cpc file but every time I try to open it to copy the file and paste it were needed it starts to open then its gone any ideas( warning I’m not he greatest with computers.

You don’t need to open the file. Just download the file, click once on the downloaded file and then right click and select “copy”. Once you have it copied, go to the post processor folder of Fusion360 or Sheetcam, right click and select “paste” to put the file in the folder.