error in loading a lyx document in a newly installed lyx 2.4.0 -alpha3

[Wolfgang Engelmann]

Am 14.02.22 um 11:29 schrieb Wolfgang Engelmann via lyx-users:
> 
> 
> Am 14.02.22 um 10:44 schrieb Jürgen Spitzmüller via lyx-users:
>> Am Montag, dem 14.02.2022 um 09:50 +0100 schrieb Wolfgang Engelmann via
>> lyx-users:
>>> How should I try to find out whats going on
>>
>> We need to see this file.
>>
>> Jürgen
>>
>>Jürgen,
you were right>  you needed a file

But I have sent you a file already where you found a mistake. This 
document was written with the version 2.4.0dev. For all the other files 
I worked on I used this preliminary version. All these files do not work 
with the new 2.4.0-alpha and give this error:

python3 -tt "/usr/local/share/lyx/lyx2lyx/lyx2lyx" -t 606 -o 
"/tmp/lyx_tmpdir.CgNaqsnmPRnO/Buffer_convertLyXFormatUZurbY.lyx" 
"/home/wolfgang/Dokumente/PUBLIKATIONEN-EIGENE/A-SP-2022/A-SP-WITTE-E-2022FEB01-TEMPLATE.lyx"
Warning: 608: Format not supported.
Warning: Quitting.
Error: Dokumentformat-Fehler

from this I guess the lyx2lyx is different in the two versions,although 
it is the same version 2.4.

In case you don't have the file any more, I send it to you again privately.

Thanks for your attention

Wolfgang