Originally Said By: Eric Mittman
There can be many reason why an file upload fails, to get more information about the file upload you will need to add the debug info to your page. This should tell you more about the upload and the problems occurring. You can get to the debug info from the bindings tab under the all uploads entry. 
I have the same problem. Using my test server files upload without a problem but on the remote server I get an "Alert" message "No file uploaded". I don't believe that it's a permissions issue.
I don't see an "all uploads" entry in my bindings tab so I can't debug as you suggest.
