Board Thread:Wiki Discussion/@comment-25761472-20141125014215/@comment-6433273-20141126021219

If you're instaling a VOCALOID 2 vocal, no matter the language, and as long as your computer's locale is in English the installation will be English. BUT if it's a Japanese vocal (this includes Luka) the program will be in either Japanese or weird computer gibberish and you have to go into the file folder and rename the "VOCALOID2_Japanese.dll" to something differant to make it English.

If you're installing a V3 you will have the option to choose the language of installation. *NOTE You'll wanna click 英語 (eigo / English)''' to make the installation English when given the language option. '''Once installed the V3 Editor (full or tiny should be in English)

I hope this helps! （＾＾）