A completely missed that one (shame on me)...
But it's exactly the issue I described: The character in question is not UTF8 encoded but has the encoding of an ANSI codepage (probably Windows-1250 or similar).
The sample file is obviously malformed and it's nothing Inkscape could (or should) handle.
Try the corrected file attached and it should work just fine.
> Crash (step 4b, with file from comment 1)
A completely missed that one (shame on me)...
But it's exactly the issue I described: The character in question is not UTF8 encoded but has the encoding of an ANSI codepage (probably Windows-1250 or similar).
The sample file is obviously malformed and it's nothing Inkscape could (or should) handle.
Try the corrected file attached and it should work just fine.