lyx file from 2015 not converted to pdf

[Wolfgang Engelmann]

Am 24.03.20 um 19:08 schrieb Pavel Sanda:
> On Fri, Mar 20, 2020 at 09:43:00AM +0100, Wolfgang Engelmann wrote:
>> Thanks all for suggestions.
>> The file did compile in 2015.
>> I tried to remove parts of the original.
>> It turned out that a nomenclature lead to the error
> 
> As we figured out in background, the problem is using ligature 'fl'
> as one character instead of normally using two characters. Replacing
> them fixes the problem.
> 
> Attached is minimal example.
> 
> I was not capable to have lyx segfault because of it.
> 
> Question, I guess either for Juergen or Guenter, is whether
> we should know unicode inside nomenclature and should be fixing
> this issue or this kind of use should not be supported.
>  From the users point of view we don't report any useful error.
> 
> Pavel
> 
> 
Pavel, I ran your mwe-lyx and got
LyX: Software exception Detected
LyX has caught an exception, it will now attempt to save all unsaved 
documents and exit.
Exception: std::exception

Did I understand you correctly, that you did not receive this message?

I am using Debian bullseye and Lyx 2.3.3
Should I upgrade to 2.3.4?
Wolfgang