[SOLVED] Launcher crashing on install

Edit: Nevermind, this fix worked like a charm for me. It's all in french, tho 
https://www.ankama.com/fr/forum/15-bugs/166-resolu-impossible-obtenir-informations-disque

As the title says. I can't download any games. When choosing a directory, no matter which, a red text says it's "impossible to retrieve disk information" ( https://imgur.com/a/uOEYmP6 ).

Also, for some reason, when switching the language for installation, the red text disappears and the "install" button no longer gets grayed out. But as soon as I click it the launcher crashes.