Autodownloader doesn't work, either in 32 or 64bit mode. Message in red "Failed to download the map [...]"
So I have a question, why there is not a page on this website to download the map .zip directly ??
Two things you can do:
1. Right click on your shortcut and 'run as administrator'
2. Move your game files to a location that doesn't require administrator privileges and either create a new shortcut with -mod sfwcl or modify your existing one to reflect the new path