If the installs fail to install the files, you can manually copy the powerscript files to your computer
For updates, locate the existing installation location folder “nz.co.o2creative.powerscripts”, or for new installs select any one of the folders below.
System extension folder (Installed for all users)
Per-user extension folder (Installed for logged in user only)
Restart Illustrator and check if the extension is installed. If the files are in the correct location it will appear in the extensions menu.