Design Crowd upload doesn't accept illustrator files! How can I upload them?

what type files to they accept?

feedback pls

feedback to what question?
Note: I traveled in Sri Lanka a couple years ago.. really enjoyed it :)

thanks your comments my country. :) .this is my design concept . what about think? #23217749

You can't upload them now. The client will get the source files of the winning design though.:)