It sounds as if you have not got the full language pack - or some of it has not been translated. Re-download the latest language pack pack and upload it to your site.
David Remember: You only know what you know and - you don't know what you don't know! My CDB Contributions | How to install an extension I will not be accepting translations for any of my extensions in Github - please post any translations in the appropriate topic. No support requests via PM or email as they will be ignored