unable to render lighting effects...

Hello,
I am trying to create a chrome finish to a graphic (I am following the tutorial on this site <http://www.eyesondesign.net/pshop/chrometext/chrometext.htm)> and get stuck when I get to the part where I am supposed to render a lighting effect (step 6). When I go to Filter>Render, Lighting Effects is greyed out and I am not sure why that is?
Any guidance is very much appreciated.
Thank you!
K

Image bit mode maybe? (16-bit vs 8-bit?) Just a guess.

and I learned something new! :) Thank you very much Ramon :)

You're Welcome, Kasia. :)