Thread:Project:Support desk/File Cache Nor Working

I am trying to enable file cache and I've followed the simple instructions to add the 4 lines to localsettings.php but I am having no luck.

As soon as I enable file cache all I get is garbage when I try to go to the site. Most of the garbage is made up of ? printed in knock-out inside of a black diamond.

When I use FTP to check the cache directory files are being made but they just don't display in browsers.

Any ideas?