I never got the Karli Cards code to function in Ch 16. Too many errors I could not resolve. By the time I got to the code in Ch 17 I was too sick and tired of the poor documentation of the code and the errors I gave up with the book code. At least the download for Ch 17 compiles.
I have also given up submitting the errors in the writing in the book. There are way too many errors suggesting very poor proofreading of the material. On top of that writing styles change within chapters.
