a question to Win8 Are there any people use Win8 system like me ?I don't know why i cannot down App from App Stores.It always tell me that "发生了某种情况，导致无法完成你的购买".The sentence means that something happens so that you cannot finish your detriment.I just don't understand why it never tell me what happened exactly??How can I suppose to know what's wrong with the situation just through this simple word? Have you ever been in this situation like me ?Would you tell me how to make it work?