All settings reset when I reopen the laucher

Whenever I reopen the launcher, all the settings are reset to default, either on the launcher and the game, losing not only settings, but maps too, but when I go to the .minecraft folder and look for the maps, they are still there, this happens with the settings too, I open the settings file and, they are there but, they are not applied to the game. ( I've already re-installed the game and it didn't change anything)