Second Proof Print Arrived

After making some corrections, the second proof print arrived today. Unfortunately, one type of image was not printed, despite it showing up in the PDF file correctly. After some investigation, I found out that it has a different color space. I am recompiling the book and will send the new PDF back to the printer today. Producing the book turned out to be more difficult than anticipated. Having a good PDF does not always mean that it will print okay.

The second proof print with a missing photo.