Last week I decided to upgrade the operating system of my main editing Mac to the latest Mac OS Sierra (10.12). Each time I do this, I cross my fingers and hope that I am on the leading edge and not the bleeding edge of technology.
All of my applications seem to be running just fine, but when I went to print an image on my Canon Pro-1000, I could tell that something was not right. All of my paper profiles were missing. I called Canon tech support (which has consistently been amazing) and they told me that Apple has made some pretty major changes to the print driver pieces of the OS and that they do not have updated printer drivers yet.
I hope this helps some of you Mac people out there.