I've followed the directions posted in this video, uploaded all of the directories and files, but the login page doesn't seem to be working.

www.dmxzone.com/go/32980/creating-a-complete-login-system-with-dmxzone-security-provider/

Have their been any changes since it was created that would cause the login form to not work correctly?

Hello,
We need a link to your page where we can test this.
Also make sure to enable the debug option in server connect settings.