Translation help

[dasthegreen]

What does the phrase in the picture mean? I'm trying to get some AC but this error keeps happening.

http://i.imgur.com/jm6tM.jpg

[Syklo]

something about katakana not existing.
maybe install the japanese keyboard on your system?

[Keii]

You need to type your surname in full-width katakana. Install a Japanese IME or copy it from somewhere.

[dasthegreen]

Yea I finally figured it out by guessing from other peoples error messages. Thanks for the help!