About the only answer I can give to that question is that it does work, at least for me. I have never had a problem with it. We need more information:
What operating system? How much RAM?
What printer do you have installed?
What happens when you click on the Page Setup button?
Has that button ever worked?
Have you tried deleting your preferences?
This is the first time I have tried to print from Lightroom so I have never used the button before today. I finally got it working late this afternoon by updating the printer drivers and related software for WiFi. opefully it will continue working. Thanks for your input.
"Make time for your Maker."