Why I have no rights to upload my assignment?

[xiao gao]

Hi all
I have download my assignment as October 16 and try to upload my assignment yesterday. Everything seems ok when I login the www.galton.com/~sun , but when I try to upload my assignment, the web tells me that I have no rights to upload my assignment. I can download the assignment but have no rights to upload, Can anyone tell me what happen on my uploading and why I have no rights?
Thanks

[Rene Larsen]

Hi Xiao
When you got the message that you do not have the rights to upload, you got this message:
"You do not have the rights to upload that assignment. Press the "Back" button on your browser and try another assignment. If you feel that you should have the ability to upload, please email us at [email protected] for assistance."
/Ren�
[This message has been edited by Rene Larsen (edited December 22, 2001).]