Assignment

HI, everyone! I use Moodle 2.0.2. The student can upload there file to the server and also can download it. Fox example, we uploaded a word file. After we downloaded it, the file can not be openned by Word. The word report the following error: can not start conert program: mswrd632.wpc error. By the way, the language packet is Chinese simplefied. However, the Chinese file name can be uploaded. Anyone give me some suggestions? Thank all!