Thus, is a self-installing language patcher for BG3 patch 4.1.1.6072089. It is almost certainly a fan-made or modding-community tool, created to provide languages that Larian Studios may not officially support (e.g., Brazilian Portuguese, Turkish, Ukrainian, or improved versions of French/German).
: Users have reported errors like "com.apple.installer.pagecontroller error -1" when using certain v4.1.1.6072089 installers on Mac. Solutions often involve using tools like or manually repacking the Steam/GOG Galaxy Users baldursgate3languagepackv4116072089run