HELP Message : "Please check its existence in permissions"

Bonjour
Je suis nouvel utilisateur de Librecad
J'ai travaillé encore hier soir 4 heures sur un projet sur lequel j'avais déjà travaillé plusieurs fois...
Ce matin mon fichier.dxf ne peut pas s'ouvrir et Librecad m'annonce "Cannot open file ...Please check its existence in permissions"

Et il apparaît bizarrement que le type de fichier est "dxf~"
Pouvez vous m'aider? Je dois envoyer mes plans en fabrication lundi matin !!!

Merci par avance
Alain
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Hello
I am a new Librecad user
I still worked 4 hours last night on a project on which I had already worked several times ...
This morning my.dxf file cannot open and Librecad announces "Cannot open file ... Please check its existence in permissions"

And it seems oddly that the file type is "dxf ~"
Can you help me? I have to send my plans in manufacturing Monday morning !!!

thanks in advance
Alain

filename.dxf~ is a temporary back up file. Remove the ~ and try to open it then. It may be your lost file.
Also look out for dxf files with  # added at the beginning, also back up files.