You don't have permission to access /Download/ftp/tmftp/windows/TeXmacs-2.1.4-installer.exe on this server

I have severally tried to download Texmacs-2.1.4, but I get the above message on the website when i click on any icon to download. How can I get permission to access and download from the server?

This seems a bug. I’ve reported to the texmacs-dev mailing list.