Download the installer above and double-click it. If Windows shows an "unknown publisher" note, choose More info → Run anyway.
Close After Effects first, then click through the installer. It sets everything up for you — no folders or settings to touch.
Open After Effects, go to Window → Extensions → X-Tools, and enter the license key from your purchase.
Download the latest installer and run it — it replaces the old files in place. Your activation is saved separately, so you won't need to re-enter your license key.