The ZIP file containing the script will not open: "Cannot open file; it
appears not to be a valid archive." I opened the file in a text editor
and saw that it is actually a RAR file. When I changed the file
extension, it opened fine.
I guess it depends upon the extraction tool used. It opened just fine for me using 7-zip. However, you are correct that it is using RAR compression.
Neither WinZip, Windows Explorer, or whatever unzip utility is built
into Directory Opus would open the file for me, until I changed the
extension. Then all three handle it without problem.