Problem baking parametric paving pattern


I am trying to follow this tutorial on how to make a parametric paving pattern. I have the script set up just as it is in the tutorial, and the pattern is previewing as normal (Screenshot 1). However, when I bake the geometry, each paver ends up with 4 lines inside of it, making each one look like four smaller pavers (Screenshot 2). Why is this happening and how do I bake the pavers as they look in the preview?

Parametric Pavers (18.3 KB)

5740 A1 Model.3dm (201.5 KB)

The lines are called isocurves. Change to rendered view in rhino or modify your display properties and untick ‘show isocurves’.

Ah, so simple. Thanks!