Invalid files in a compressed archive

Hi,

Recently, I was trying to upload a .zip file via the compressed archives uploader in the control panel. However, it gives me an error that says "Invalid files". What types of files in compressed archives are considered invalid?

Thanks

If the .zip doesn't contain confidential data or informations you may upload it via FTP in your webspace and link it here in order to check.

The zip file is here and the unzipped folder uploaded via FTP is here (I have a .htaccess file that might redirect you somewhere else). This archive is just a standard MediaWiki installation file.

Thanks,

Hi, this file contains a symbolic link (mediawiki/README.mediawiki). If you remove it, you will be able to upload the archive.

Thank you!