Armaiiiupdatefromv216tov218elamigospa — Quick

This usually means your base game isn't actually v2.16. You cannot skip versions (e.g., you can't go from 2.14 straight to 2.18 with this specific patch).

: Before performing any major updates, ensure you have a backup of your important files and save data. This includes your Arma III profile and any mods you're currently using. armaiiiupdatefromv216tov218elamigospa