Buenas Baraku, seems your problem isn't your client, is your windows, do a search over google with this error "CLR20r3 windows 7 32 bits" and you going to see the problem is windows 7 x32.
https://social.msdn.microsoft.com/Forums/es-ES/436b042c-20f7-4c6b-809b-e9cc888c573b/error-clr20r3-al-ejecutar-programa-en-windows-7-professional-32-bits?forum=vbes - aqui son ejemplos.
Reinstall your windows and just use windows 7 ultimate or windows 10 pro x64 bits. Will solve all your issues.
Be sure you are saving your game client on a diffrent partition :)