The link does work.
However, the Forum at Stardock tends to mess up links once in a while, especially if underscores are involved.
So you got 2 options on the link:
1) add _setup.exe to the address bar after: /sdcentral { ie: /sdcentral_setup.exe} or
2) go to the Forum at Wincustomize and click it there ( https://www.wincustomize.com/Forums.aspx?ForumID=181&AID=98194#767888 )