Dear tak2hata,
thanks for this great tool. For all german speaking members I could write a language file. I hope it will help... This is the first time that I'm posting something in a forum, but I'got something like a Sketchup ruby fan and I'm very happy that I can download so many excellent plugins So I also want to contribute a little bit. I hope you will continue with your great work.
Greetings from werni60 (Germany)

German language file (lang_de.txt)