Hmm, 3.0.13 is really old. Try to contact the author, he might have an update (not all updates are submitted to www.dotnetnuke.com)
Otherwise you will need to complete the language pack by yourself. Some hints for this:
- Discussion has been dropped
- Image is now Media, you can unpack and rename existing files .
For DNN 4 you can manually move SearchInput and SearchResult file to /admin/search.
Other modules have recently been added to the download, there might be separate language packs around:
- Blog
- Forums
- Gallery
- Repository
Drop Store, the current version is not applicable outside the US.
All other files missing or with missing entries need to be completed, files with obsolete entries need to be saved only.
Note: there are about 12 files in resx V2 format, that get misinterpreted by resource verifier. In fact, they do not contain obsolete keys as stated.
HTH