Upload error (CLOSED)

When I try to upload a new product zip file I recieve an error: 
"could not save package file make sure the file is a valid zip archive"

is it me? or are you vendors having the same problem

first question would be,  how did you compress the zip archive.

I just tested an upload, seems to be working. Are you still getting the error?

Also, how large is the file?

worked OK for me as of yesterday

@USB - 

Would your package filename happen to have an ampersand (&) or other special characters? 

If so, please try renaming the file to remove special characters and see if that fixes the problem.

Please report back, and we'll continue assisting if necessary. 

Yes, this special character made the error  (&) I altered the filename and it is uploading now.
Thanks for that tip