I had the same issue, stopped working error code: CLR20r3. I found that it is a problem with registries of windows and could it be caused by diferent coding in your system.(expecialy if you have windows in different language than English) So try this: Control Panel, selecting Regional Settings and going to the Advanced tab. Change the language format to English and click OK. This solved my problem, I hope that it will help you too. Sorry for my english.