This is the error message I receive when I try to upload my file:
Sorry, there has been an error.
File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your php.ini or by post_max_size being defined as smaller than upload_max_filesize in php.ini.
My hosting company has informed me they have increased the php.ini to 15GB for me to allow this file to be uploaded.