lyx not a readable Lyx document

[Wolfgang Engelmann]

Am 06.04.22 um 18:05 schrieb Jean-Marc Lasgouttes:
> Le 06/04/2022 à 17:58, Wolfgang Engelmann a écrit :
>>
>>
>> Am 06.04.22 um 17:52 schrieb Jean-Marc Lasgouttes:
>>> Le 06/04/2022 à 17:44, Wolfgang Engelmann a écrit :
>>>> And this is the output from the terminal starting lyx there:
>>>>
>>>> lyx24x MEINLEBEN2020-B.lyx
>>>> Warning: 609: Format not supported.
>>>> Warning: Quitting.
>>>> Error: Document format failure
>>>
>>> This is what I thought. It seems that you have a working recent lyx 
>>> somewhere (the 609 version) and that now you try to read the file 
>>> with an older version.
>>>
>>> JMarc
>>
>> Thanks a lot, JMarc.
>>
>> Yes, it works now, very glad it does!
>> What is the best way to update the 2.4 version?
>> Do I have to use git again ?
> 
> If you still have the directory where you built LyX, then
>    gitpull
>    make
> should be enough (you can add "./autogen.sh" as a second line to play 
> safe).
> 
> But you have a newer LyX 2.4 somewhere, since you produced a file with it!
> 
> JMarc

I remember, that one does not need a lyx2lyx in the same version, here 2.4.x
Has this changed?

Wolfgang