Problems with international characters in Extend

[Joshas]

I've posted a Lithuanian description in GetSimple Extend Install Instructions section, but some characters are showing up as question marks. http://get-simple.info/extend/language/l...nguage/52/
Original text:

Išarchyvuokite ir nukopijuokite į GetSimple katalogą /admin/lang/ savo serveryje.

How it appears in Extend:

IÅ¡archyvuokite ir nukopijuokite ? GetSimple katalog? /admin/lang/ savo serveryje.