: Ensure you have both the .exe and the .7z archive. You can often find these in your Adobe Account Downloads if you have a registered license.

: Usually contains English and Japanese .If you run the LS4 installer and don't see English, it is because that specific package was not built to include it. How to Fix Common "File Archive Missing" Errors

Even if the installer works, CS6 faces challenges on modern operating systems: Trying to install an app - Adobe Community

Adobe used "LS" codes to designate language sets for their installers.

The most frequent issue when trying to make MasterCollection_CS6_LS4.exe work is an error message stating: "The file archive part of Adobe CS6 Master Collection is missing."

: The filenames must match exactly (except for the extension).