Comment 8 for bug 561121

Flagging this as "Won't fix".

Final investigation note. We can do some logic to detect illegal characters e.g. in page names and work around it (although we won't to keep things simple). However in this case the notebook path was stored in the config file, this file is written in utf-8 so it does not preserve original filesystem encoding. So if locale settings change we can only guess what it should have been.

I will make the encoding fall back to utf-8, and which happens to be the right thing in your case, but this is not a proper fix,