loaderE loaderC1 loaderC2 loaderC3

Error "Error reading JObject from JsonReader.Path line 1 position 637"

When facing this error, you should reinstall the launcher first (it's not necessary to delete the game at the same time). Launcher installer can be downloaded from the profile page on the site. Then, in the launcher, you need to specify the path to the installed game, if you did not delete it, or install the game again.