Shoutbox

Ah, that's because the server hosting the script doesn't recognise the .plsc extension and turns it into a .zip

In order to change this, navigate to where you save the file and click "Tools" then "Folder Options" and unselect the option "Hide extensions for known file-types"

Then edit the name of the file to change it from a .zip to a .plsc and then you can double click it and it will install