I have a blog at wordpress.com and I exported it (it says it's around 8MB) and now I tried importing it to my self-hosted blog. It didn't work and the error says:
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.
The xml file is not empty as I just checked it. Does anyone know what the problem could be?