You're welcome Totokh.

=> I have tried, and from another account, but it crashes as well upon login
Ok, so sounds like a system-wide issue so that rules out character specific or server side.

I had never tried to do anything about this file before reinstalling, do you think I should delete it, then reinstall all game ? Or not necessary ? I ask before reinstalls take 10h+ with my internet
It's worth a shot if you're re-installing. Another option is to move everything from that folder to another folder somewhere else on your hard drive (leaving the folder intact but empty) rather than doing a full reinstall. The game should re-create the folders/files on launch (ALL settings will revert to default). If you're still having issues then the game files themselves are likely a problem but it'll rule out any config corruption at least.