Installation Implementation is not available

Hello i have a nas and a 7z/rar file thats a windows/pc game. i set up like the guide mentioned but when i try to install the game so that it can download from my nas and extract to my local pc i keep getting the "Installation Implementation is not available" error. im not sure why. i made sure to add Rom and named it "Install" then i put the path to my nas drive example "X:\Games\PC Games\Halls of Torment.7z" did set up a new source and set as primary Installer path is my network drive : X:\Games\PC Games have set up the unarchiever tool to C:\Program Files\7-Zip\7z.exe