Hi,
you can have a free autogen for this region : http://fsx-p3d.cd91.eu/Autogen/par%20region/provence-alpes-cote-azur.zip
You need to create a texture folder inside the directory and uncompress the previous file inside.
If you need other region : http://fsx-p3d.cd91.eu/Autogen/AutogenFr2.php