lyx file from 2015 not converted to pdf

[Richard Kimberly Heck]

On 3/19/20 12:20 PM, Paul A. Rubin wrote:
> On 3/19/20 12:03 PM, Wolfgang Engelmann wrote:
>> I am trying to export from a lyx file produced in 2015 a pdf file,
>> but get this error:
>>
>> Error: Softwareausnahme erkannt
>> ----------------------------------------
>> LyX hat einen Fehler (Exception) entdeckt. Das Programm wird jetzt
>> versuchen, alle ungespeicherten Dateien zu speichern, und dann beendet.
>>
>> Exception: std::exception
>> Buffer.cpp (1601):
>> /home/wolfgang/Dokumente/Photobiology-2015-3/PBR-FINAL--NN.lyx.emergency
>> Buffer.cpp (1601):
>> /home/wolfgang/Dokumente/Photobiology-2015-3/PBR-FINAL-NN.lyx.emergency
>> Abgebrochen
>>
>> what might this mean > Exception: std::exception  ??
>>
>> I started the lyx on a terminal and there it starts with
>>
>> $ lyx PBR-FINAL--NN.lyx
>> kf5.kio.core: "Ordner tags:/ lässt sich nicht öffnen."
>> Warning: Failed to produce 1 preview snippet(s)
>> QXcbClipboard: SelectionRequest too old
>>
>> further errors:
>> Error 84 returned from iconv when converting from UCS-4LE to
>> ISO-8859-15: Ungültiges oder unvollständiges Multi-Byte- oder
>> Wide-Zeichen
>>
>> How should I proceed?
>> Wolfgang
> The last message (error 84) suggests that there may be a problem with
> character encoding. If it is in a preview snipped, that could explain
> the preceding message.
>
> You can try to isolate the problematic portion of the document by
> bisection. Once you know where the problem is, we may be able to offer
> more specific advise.

It's weird that you'd see the problem now and not in 2015. As Paul
suggests, this is a problem with one of the characters in the document:
We're trying to convert it to the right encoding and that's failing. LyX
should not crash when that happens, but sometimes it does.

Riki