Having blown an hour or so, I'm no closer to achieving a result. I used the 'Watch me do' to record a series of actions. I want to open a file in PrintTool, and then print it. The file will exercise the ink lines by printing at 2880 and printing each channel as a pattern, so a nozzle check won't do it. Having saved my actions as an app, I get an error each time that I try to run it. I have been through the security kafoofle too. Searching the web, it looks like I'm not alone. I don't want to derail the thread. I'm just pointing out that by Sierra, it's getting more difficult.