sfx_archive.tar.gz not in gzip format

Hi,

I downloaded the current version for Linux for screen-scraper Enterprise from:
https://www.screen-scraper.com/developers#download

but I can't seem to execute the shell executable - getting the error message:
"gzip: sfx_archive.tar.gz not in gzip format

I'am sorry, but the installer file seems to be corrupted.
If you downloaded that file please try again. If you transfer that file with ftp please make sure that you are using binary mode."

Gave it multiple tries downloading with different browser from different computers, but always the same problem. Could you please provide me with a MD5 so I can check that it's not a problem with the file transfer? Or does anyone know if this is a common problem with a known solution?