Close Mastercam completely.
If you updated Mastercam to a newer Service Pack, you must download and install the corresponding updated language pack. mastercam language packs
The language pack version does not precisely match your Mastercam Update/Service Pack level. Close Mastercam completely
Mastercam does not offer localized packs for every language in the world (e.g., smaller European languages or specific regional dialects are not supported). mastercam language packs