Seems like there is a little problem with importing NZB-files converted into UTF-8 (through <?xml version="1.0" encoding="utf-8" ?>).
For example ø (the Danish letter 'ø') in subject, seems to make the subject-string fail.
Subject "blablaøblabla" is changed to "blabla?", instead of "blablaøblabla".
(testet in: v0.25.0)