C:\Program Files (x86)\Ecru\PRO100 (or similar, depending on your version and vendor).
If this fails, reinstall using the English installer or edit the System.ini file in %appdata%\Pro100 . Pro100 Change Language
Changing the user interface language will automatically translate your object libraries, materials, furniture catalogs, or textures. Library folders and element names are hardcoded as file directory names on your hard drive. To change your library language: C:\Program Files (x86)\Ecru\PRO100 (or similar
I can provide the exact file names and configuration steps tailored to your specific software build. Share public link Pro100 Change Language
In some newer installations, Pro100 includes a language switcher directly in the settings.
: Look for the cogwheel or gear icon (Settings/Options) in the top-right or main menu.