Had computer crash/BSOD, unitylauncherpro user.config file was corrupted and then application fails to launch.

info:
https://www.codeproject.com/Articles/30216/Handling-Corrupt-user-config-Settings
https://stackoverflow.com/questions/42708868/user-config-corruption

error:
System.Configuration.ConfigurationErrorsException: 'Configuration system failed to initialize'