Digital DJ Pool: The Only MP3 Pool for the 21st Century

I tried a few times to upload last night and I keep receiving the following error message.

The connection was reset
   

The connection to the server was reset while the page was loading.

    *   The site could be temporarily unavailable or too busy. Try again in a few
          moments.

    *   If you are unable to load any pages, check your computer's network
          connection.

    *   If your computer or network is protected by a firewall or proxy, make sure
          that Firefox is permitted to access the Web.

 The file is 6.41mb in size which shouldn't be too large to upload.
 

The site will allow up to 7MB files.

What is the filename? Are there any non-alphanumeric characters? 

Nope, no weird characters. Same naming convention I've always used.

Tried to upload the track again and it failed.

Size on disk reported by Windows is 6.42mb, so it's below the 7mb limit.
 

I will email the file to you because I've processed the file exactly the same way I've processed all my other files.