Comment 2 for bug 538736

Can you provide us with the exact filename that was passed to the viewer program?

From the screenshot attached to the e-mail message I would conclude that it is _not_ encoded in utf-8: The byte sequence for "ä" in utf-8 is C3 A4, while in windows-1252 it is E4. So if filename was encoded as utf-8, then the "ä" would not be displayed at all.