It really did maze me, so I did some experiments again in my virtual machine. The OS is windows XP english version and the project is my "unihead", and the path didn't contain any chinese characters, and so on... :lol: I found that whether the whole envirment is chinese or english(switched in regional settings) is not the point. I tried to delete C::B configuration files and to my surprise, the problem disappeared. So I carefully checked the default settings and found that the default encoding is "windows-1252". When it is changed to "default", problem appears... :shock: