The difference between 2 databases is that the one is 2.50mb and the other is 5.48mb. At first place it creates a file on uploads in both sites. However on demo site, as soon as it is finished it gives you the ability to download to computer and file is removed from uploads. On live site, the file remains on uploads and browser keeps running forever although the file is completed.
Hope I have helped.
May be there is a problem on bigger files.
