i have to agree with arran... since i can't see your exact values for your grid texture, i can't SUPER accurately reproduce it, but i can create the same 'floating bars' that you've got... i think your u width and v width values are too high. if you go back to the default settings of .200 and .200 you can start over, and if you're not getting the shapes you want in your grid texture, the answer shouldn't lie in changing the u and v values, but instead should be found in changing the repeat UV settings found in the place2dTexture node.

edit:

books aren't infallible, so if that's what you get by following the book but it doesn't look correct, they either forgot to mention a setting you're supposed to change, or you missed something.